First you have to become a Ghost Sniper. Then go into a bubble with an enemy that launches the drones that shoot lasers at you. Let one do so, and disassemble. Wait for, say, a minute, then let go of the space bar. You should be in whatever state you were last in. Now you're invincible (on the other hand, you can't shoot). I have only pulled this off once (and that was an accident), so I'm not sure what happens if you're Fighter #4. If you're a Sniper #2, then you can still teleport, move, and jump bubblefields, but you can't actually damage the enemies (and they can't damage you). Not sure if this glitch has any actual use, but I felt it was worth mention.
