You know, apart from the thing we primarily suck at going into the playoffs with quite a few teams that really like to do that thing including this week's opponent, yeah I guess you're correct.
Also, he's a defensive end, it's not really that complex a job. I'm quite sure he can line up at DE or DT on pass downs and remember what to do.
He brings something to the table that the other ends don't, he was super popular in the locker room, he is a guy to bring some juice when the team is flat, and he will be dirt, dirt cheap to sign through the end of the season. Oh and if he plays well and the Bills want to keep him they will likely have at least one vacancy at his position and he will be highly affordable once again.
What exactly is the problem here?