Grendel pulverize stuck when hitting water

[(PSN)erwinberkers]

During mission Ophelia and accidentally hitting the water during active ability pulverize, leaves Grendel at the bottom showing as an unrecognisable mix of polygons with colours of both the Archwing and Grendel. There is no escape, tried command unstuck twice to no solution. There is some limited movement and the Archwing abilities seem to trigger, but no escape. The active ability doesn’t end either given the switch to Archwing. Abort mission to the only rescue.