I had the exact same problem. To add onto what akselmo said, it is indeed Immersive First Person View which causes the trouble. The problem is that you failed one simple but crucial step before uninstalling - making sure you were not in first person view. The fix is simple: load up the save with IFPV then switch to third person view and save and quit, then remove IFPV. That's it. It even says to do this on the nexus page, something which I also initially missed.
Lesson learned: read a mod's uninstall guide before uninstalling because weird things could arise.