Are you sure you were shot down? I'm asking, because I lost my plane today as well... total loss. I'm still flying glow stuff -- it was a 50 sized Showtime. My accident sounds kind of like yours and mine wasn't shot down. I took off, got some altitude, then did a quick snap roll and...... nothing, no response at all. Me and a friend standing next to me just watched it go straight in for 2 or 3 seconds at 3/4 throttle.
In looking through the wreckage I'm convinced the battery lead left the RX.
Yours sounds very much like mine? I've never used an optical ignition kill. Would that kill the engine upon the RX losing power? A few people thought I might have been hit as well, but didn't act like it at all (or what I think it would act like). Controls just froze solid.
Sorry for the loss.
- Wayne