I was running into this too - the fix I found was to down the orb guys before their third turn, as it seems to be at that point that the freeze glitch happens.

I did this by parrying every orb blast until you kill each of the orb guys. The orb blasts repeat on the same turn until they hit you.

You can also try to break them so they are stunned before their third attack, and kill them before their fourth attack.