Here's What I Think (After all, I stayed at a Holiday Inn Express last night)
Within the context of his supporting cast, Kurt may be the problem.
Although the O-line has only given up 8 sacks, this doesn't mean that Warner isn't being hurried much of the time.
What I think is happening is that, with the offensive pocket constantly moving back toward him, Kurt lacks the mobility to roll out of the pocket and throw on the run that some other QB's have.
Instead, from his stationary position back there, he's forced to throw off his back foot (often lofting the ball over pass rushers in order to prevent it from being batted down) and too often misses his receivers or leads them into major train wrecks from physical corners and safeties. Or he thinks he can still make throws off that back foot and tries to thread the needle too finely between 2 or 3 defenders and gets picked off.
Given the "bend but don't break" way or offensive line has been put together by Russ Grimm (who is working miracles with the guys he's got), I fear that it comes down to either (a) Kurt better understanding what his limitations are and not trying to make throws he can no longer make or (b) putting in a more mobile QB like Rattay or Hasselbeck who can move outside the pocket and throw on on the run.
Clearly, I'd rather see Kurt figuring out how to cutvdown on bad throws and interceptions than I would risking putting our offense in the hands of 2 unknown entities, but it might just come down to that.