How about to keep their job? Most of the scoundrels are still working at AIG -and if you want to read about incompetence and malfeasance, there is quite a bit laid out in this:
http://online.wsj.com/article/SB123812287215554481.html
A very well written article (if you are not a subscriber, you can subscribe for free for 2 weeks)
And, like I said in my last sentence - how about in good conscience? Unless a person (especially, an extremely well compensated person) is morally bankrupt, how could they accept a bonus paid with money supplied by the American people?
I'm sorry, this can be spun in many ways, but accepting those bonuses is just wrong.