Peter feels bad almost immediately, he really does but he has to protect Mr Stark. He's already dealt with way too much today, some of it even Peter's own fault, and he needs to rest. Not to mention, who knows what Tony would do if someone just barged into his compartment and started demanded color changes and better accommodations and the like.

"Look, like I said, you gotta leave Mr Stark alone-and since you seemed to have no intention of listening to me..." He glances at the webbing. Maybe that was a bit extreme. "Anyways-don't worry about it too much-it'll dissolve in like two hours-so you'll just... have to chill here."