Doesn't seem like it was, never saw it mentioned. Maybe cause they only had video footage of the one incident. I agree that it should have been though.
Even if he was provoked he still shouldn't spit on him, that's my point. If you're not willing to think about the moral reasons for not spitting, you should consider the damage done to the Italy NT if Totti receives a lengthy ban.
You still don't spit on your opponents, as that's highly against the rules, highly insulting to him and very stupid as the chance of getting sendt off for it and getting suspended for a long time is big.