For as long as they have Mario Balotelli, Carlos Tevez and even Samir Nasri to a certain extent now after what happened the other day, there's always a chance of drama being created to throw the whole club into turmoil. Clutching at straws now maybe? I can live in hope!
I think the sacking of Harry Redknapp at Tottenham plays into Arsenal's hands and gives them some more time to shape things up at the club. Harry was building something good there and why he has been sacked is beyond me. In terms of the 3 to go down, I can see QPR struggling, like you said, Wigan for definite as they're always there or there abouts, Swansea could potentially struggle with second season syndrome. It's going to be a tight season that's for sure, if it's anything like the last season then it's going to be a good one with plenty of ups and downs. Last season was crazy, the bigger teams were dropping points against teams that you would usually bet your house on them picking up all 3!