Character stuck in a boss fight - Viper Napuatzi

Accidentally rolled off my rhoa and into a guard during the fight and now that guard has locked me in and i can't move. Funny enough it's also making me invisible to the boss sometimes. The guard is not dealing enough dmg to kill me, and neither is poison from boss. I am still stuck in the fight.

What do I do in this situation, do I just fail this map then? Lose all progress?

Character: Ongalus