Shit... this guy's still here? He's so out of it when his exterior body falls into dust, that he still hasn't shaken thick layers of it off of his skull and body. When he changes back, it always leaves enough of a mess to almost bury him.

Somehow, in that time, this human has already followed him. Part of that makes him feel threatened, and the rest of it just makes him confused. He doesn't really have the mental space to consider that, at least to this one guy, his cover is totally blown - or for him to think about why he tried to keep it a secret in the first place.

He fumbles as Greg tries to pick him up - god this guy has some nasty burns, what is he doing, did Sans do that? - slipping in the dust and reaching out for something as he dully tries to remember how to open his portable hole.

At the very least, now Greg will probably recognize him from around the carnival the last couple weeks.

"Nah, man, what are you doing..." He trails off there. God, he's so tired. He's not hurt anymore, he left his injuries with his now dusted alternate form, but he's still totally drained and more brittle in a way he can viscerally feel. "I said I got it..."