On one hand, Lyle probably ought to go check on the food and the set-up. On the other hand, one of the Yeti had escorted him from the kitchen when he was trying to cook and garbled something at him while pointing firmly in the direction of Brainy's lab. And had repeated the same while wearing heat vision goggles when Lyle had tried to sneak back in. So maybe he ought to go 'help' Brainy pick out some clothes or something.

He was already dressed for dinner, after all.