I, too, have been having this problem as a Werewolf while fighting dragons. Every time they knock me down, the camera gets stuck and I have to reload and hope that I can redo the battle without being knocked down. I have seen someone playing Vanilla Skyrim having this bug, though, as well, not sure if it is caused by the same thing or not though. I tried removing The Dance of Death, and the no spinning death animation mods, which were the only kill move animation mods I had. The issue still seems to be occurring though. I have noticed that when I get back up, sometimes my model can walk, but it will be like rotated into the ground, so it can't actually move. Other times, my character does not respond to the movement keys at all. Getting very frustrating. I am going to try some camera mods, or that faster stand up animation mod, but I am wondering if the real problem is something deeper.