Yes, Zim, the move, stellar manip, move is very possible. I have done it many times. One big "however". It only works with certain components, most notably the resonator (for opening worm holes). Because you can open a worm hole from anywhere, the program will accept the very procedure you suggest. To destroy a planet, you must start over a planet. If not, the program will ignore the order completely and you will get only move, move. I have not tried it, but you should be able to start at one planet, move to another, destroy it, then move again. You can trick the game, but you have to give it some bait.
Kim
(Upon rereading this, it seems about as clear as mud. Let me know if you need clarification.)