Howard's a very good medic. He is probably not such a good medic when they're covered in grime and he's got pretty much none of his equipment. And probably especially not good when they're camped in a giant nostril cavern.

"I think it's also telling us not to blow up any more hologram generators."

The tentacles retract, although it seems that they're rushing away not because they're sated, but because they have a destination somewhere they need to get to immediately.