So, had a situation in a friendly game happen where a Tholian ship made a bad move and move dead on towards the planet and bumped into it. Because of the move set that it possesses, specifically no 4 forward or 3 sharps, there was not a single move that it could complete to escape bumping into the planet for the rest of the game. Was this played out correctly or is there some rule for this sort of situation?
That's how I'd play it. I don't believe you can overlap planets, so you're stuck at the last point where you don't overlap. If you can't clear the planet on any subsequent move, you'd basically be stuck there, not being able to take any actions (due to continually bumping).