The battle system (The Elder Scrolls 5: Skyrim)

All kind time of day.
Still collected a lower-right Assembly mods and decided to go the way of the assassin. And that's what came across: in combat I have to move a lot, so that the enemy did not hit me, because the armor is not so strong and the damage is but to beat. But I noticed something that had not noticed when I strike, the movement of a Fig is locked and in the end I blow demolished the floor of HP, and the character is unable to move. Is there any way to fix it?