Stuck in poe 2 behind guards in battle with Viper Napuatzi

Character stuck at Viper Napuatzi
In the middle of the boss fight, when the shield-wearing adds surrounding the arena takes a step back and fires projectiles, my character managed to walk behind one of the adds and got stuck. The boss stopped attacking, and I cannot move, roll, or attack in any direction. Relogging does nothing, the instance is still up when I log back in.

How can I make my character unstuck?