If your team was my team, here's what I would try and do.
Trade Alexander and Alstott for Eddie George & RBx(I don't know who else is on that person's team, but they'll drool to get Alexander). I know that he won you the league last year, but don't look for the same this year. The O-Line is hurt and holding out, Dilfer isn't back and Hasslebeck is worse than last year. I think he's still the third best back in fantasy football. If you can replace him with Eddie George and another decent RB who can start for you, I would do that. Stewart isn't staying healthy. Alstott isn't Grudens type of back, Wheatly will get more carries but not a ton, and Wells isn't worth having on your squad unless it's a keeper league. Maybe throw in a WR for good measure.