If 2010 is an uncapped season, it would be the perfect time to cut bait on a guy that would have a huge cap hit when cut, like Portis.
Granted, Snyder's man crush on Clinton probably makes cutting him a non-starter. But, I wouldn't be against it if it were to happen.
I'd much rather invest in the OL and go with Ganther + Betts as a RB by Committee approach.