Cyborg teleporter upgrade works when stunned.

[Captain_Bravo]

Considering how rare it is for telecrystals to actually make it to robotics, this doesn't seem like that big an issue. Also, it takes time for a player to activate the teleport, choose a location, etc. Not a lot, but a couple seconds. Since I'm fairly sure a borg can't relock it's own panel, with an appropriate ID and a screwdriver you should be able to eventually debrain a rogue teleborg.