Oh, I did some messing around with the Pissed Off Drone. After the Stasis wears off you can Recall him, and he will be frozen and continue to be "pissed off". You can Maelstrom him, and when that ends, he will return to the Geyser, climb up again, and get pissed off again. I also noticed that burrowed units can't be put into stasis, but if you burrow a unit while you stasis, it will be burrowed in stasis.