I've been a holoparasite once and my host and 2 others got perma-stunned by fastmos. So options were, I do nothing and all three of us die. I only save my host and they scream on comms before dying. Or my host explains they have a holoparasite that will save all of them in exchange for their silence. Needless to say we went with the last option, saved everyone, and they actually kept their mouths shut. So good-guy-traitors do happen rarely.
I feel I'd like this idea most if yellow spiders cannot infest husks, and they do not gib people after their time is up, they husk them. Allowing them to not be guaranteed permakills. Also if controlled corpses behaved as though they have brain damage. Unable to work consoles or complex machinery. (They are still a spider piloting a corpse).