His first choice was to bail out, but the control surfaces were so shot up that when he let go of the stick, the plane went in to a steep climb and pinned him to the seat. He had to brace the stick against his knees just to keep it level. The "official" bail out protocol was, I believe, to unsnap the seat harnesses, open the canopy, turn the plane upside down and simply fall out of the seat. Not an option in this case.
The real **sser is that dad's plane was being serviced between sorties to Bastogne, so he flew the squadron commander's brand-new plane on it's first (and last) combat mission............in his befuddlement after the landing, in the aircraft log, he checked the plane off as "okay."