No, but the NFL is, or at least should be committed to getting this deal done. As it is, I believe the NFL owners and the commissioner have more power then the NFLPA. At least, that's what I read on a post here.
It's not only the players that are causing the problem here. It's Gene Upshaw.
And besides, Alexander doesn't need there to be no cap if he does sign long term this off-season. No matter what, there will be a cap whether we get the CBA extension or not.