Football Association sex scandal secretary Faria Alam lied on oath and made a claim of harassment against her ex-boss in an attempt to secure a financial settlement, it was alleged.
The 39-year-old, who has admitted flings with England head coach Sven Goran Eriksson and ex-FA chief executive Mark Palios, earlier told an employment tribunal that FA executive director David Davies made 'unwelcome advances' towards her.
During her evidence last week, she told the London hearing that her former boss, for whom she acted as personal assistant, had attempted to hug and kiss her and pestered her for sex.
But the ex-model was called back to the witness stand this afternoon to explain an interview she gave to the Mail on Sunday last year in which she said Mr Davies, 57, had never 'tried it on'.
The previously unseen interview, printed for the first time on Sunday, appeared to directly contradict her case and included praise for her 'jovial' employer.
Miss Alam today told the hearing she had not lied either to the newspaper or the tribunal and said she stood by both sets of her words.
Jeffrey Bacon, for the FA, asked her to explain the contradiction between the interview and the harassment claim.
He said: 'You simply told a lie, knowing you were telling a lie and you were expecting that it would never come out (the interview) and you would get away with it.'
Miss Alam said: 'I am not trying to get away with anything.'
Mr Bacon pressed her and added that if the content of the interview was true, then 'everything you said under oath was simply not true'.
Clearly shaken, Miss Alam repeatedly insisted said had not spoken of the alleged harassment last year because she did not want to bring up Mr Davies and because she felt sorry for his wife.
'I didn't want to bring anyone else into it and it is true he's a good boss,' Miss Alam said.
In the interview, culled from eight hours of talks with a reporter, Miss Alam was asked if Mr Davies had 'tried it on'.
She replied 'no, no' and told the newspaper: 'I don't see anything bad about him. We had a great rapport and I didn't find him difficult to work for.'
Mr Bacon told her that if she had not been deceitful to the tribunal, then she must have been deceitful to the Mail on Sunday - with whom she had signed a contract pledging to tell the truth.
She said: 'I'm not being deceitful. I stand by what I said last year and I stand by what I said this year.'
Mr Bacon: 'You were asked a direct question by them (the Mail on Sunday) and you decided you would lie.'
Miss Alam replied: 'They weren't lies. They were things I said at the time and I stand by them now.'
Mr Bacon said if that was the case, she must still stand by the fact that Mr Davies didn't 'try it on' and put it to her that the interview with the Mail on Sunday was the truth.
'You fabricated this evidence to try to scare the FA into settling with you,' he told the former secretary, referring to the harassment claim.
Flustered by the exchange, Miss Alam shook her head and said: 'No.'
The surprise return of Miss Alam to the stand brought to an end five days of evidence in the tribunal case, in which she has accused the FA of being a 'boys' club' and protecting only male staff.
Her lawyers said she was treated differently to Mr Eriksson, who was allowed to retain his right to privacy and kept his lucrative contract as England football manager.
Miss Alam said it was unfair that the FA attempted to broker a deal for her to give a 'kiss and tell' interview to the News of the World in return for an assurance that the paper would not name Mr Palios as her other lover.
She is claiming sexual harassment, constructive dismissal, breach of contract and unequal pay.
The case will sit again on July 26 to hear submissions and the three-strong panel is expected to deliver a judgment in August.
Outside the court, her solicitor Nigel Forsyth said: 'We are happy with the way things went. We feel we have had a fair hearing and we will have to wait to hear what the tribunal says.'
Miss Alam rolled her eyes when a reporter suggested she had been depicted as a 'gold-digger' and said only: 'I'm going on holiday.'
The tribunal earlier heard from the FA's head of legal and business affairs Alistair MacLean, who said that Miss Alam had been 'clear' she had not had an affair with Mr Eriksson and had told him so on 10 occasions.
The legal chief, one of three senior executives who questioned her about events on July 19 last year, added: 'I told her that this would be a very expensive matter for all of us if she was lying.'
He said that as letters were drafted to newspapers denying stories of the affair, the secretary appeared 'composed' and was worried only about the effect of the allegations on her conservative Muslim parents.
Mr MacLean also revealed that Miss Alam, who claims she did not resign in order to sell her story, penned media deals worth £300,000 minutes before she sent her resignation letter on August 5.
He said documents detailing two £150,000 agreements with the News of The World and the Mail on Sunday were timed at 6.47pm.
The lawyer told the tribunal that Miss Alam then faxed her resignation letter from the office of PR consultant Max Clifford at 6.53pm.
