Have never played a game this good that you can get stuck in so many places and yet they had the time to make 2 DLCs.
When you get stuck in battle mode and jumping, crouching, nothing works to get unstuck there is no way out since you can not use fast travel.
Hand grenades often help - just throw one on the ground 
Besides ragdolling you with explosives, as said above, you can always quit to Main Menu and then Continue your game.
Yeah. Often, the loss of health combined with a very loud noise is a bad idea.
I just had to quit because I got stuck in the empty space entering a tent… You know, the open door.
I couldn’t use a grenade because, the fact I didn’t have any notwithstanding, because within easy hearing range of the blast were two tanks, one military grade, and a Hunter Rival.
Reloading was easier than dying, but a patch to fix getting stuck on nothing would be better.