Nope, what happened to us in the last 6-7 rounds of the season has only happened before to Newcastle and Roma in recent times.
At the end of last season, there was period where we had Almunia, Gallas, Vermaelen, Djourou, Song, Clichy, Gibbs, Ramsey, Fabregas, Rosicky, Arshavin and Van Persie out injured.
In that period we lost to mediocre teams like Blackburn and Wigan.