Err...why would these 60 people go down exactly? And gerrymandering makes it very hard to swing significant number of seats.
You have the worst of both worlds. You have a very unpopular national government and a major scandal targeting the GOP Congress.
The low popularity of Bushco will have a net negative for GOP votes. Further it will reduce the amount of level one candidates the GOP can field. Plus scandal will cause there to be a significant number of previously GOP open seats which will eliminate the advantage of incumbency which will make the gerrymandering less effective.
Oh and I don't mean 60 people losing their seats. I expect a pickup of 20-30 seats. I mean 60 members of congress or staff of members of congress being strongly tied to abramoff.