Sinister's anger was very phyric. Short lived, but burning hot when it came. His emotions had been wiped out by Apocalypse close to a century and a half before. But over the years the mental blocks that had been placed slowly crumbled, leaving cracks that leaked the occasional feeling. The strongest and most prominant that came was anger. Probably because it came and went so quickly, so easily. A man who normally thinks and acts with logic and science bent toward beating nature at her own game didn't have much that would set him off. But when it was triggered, it would explode like a volcano. Hot and burning for a time and then cooled down to simmer and build beneath the surface again.
Such explosions and rumbles had become more common in the last fourty years. Something Sinister had paid little attention to. He was accustomed now, to these moments of his. A weakness he wasn't aware of but should have been.
And Remy just seemed to set him off. He really wasn't sure if he was more angry at the idea of the boy implying (accidentally, to be fair) that he was a pedophile or if it was because his Lord and Master had forced him to watch the boy grow up in way that made knowing what a pedophile was like a survival tactic - and all the implications thereof. He heard Remy's voice, but really didn't hear his words.
He waved one hand as if in answer and continued his trek. But at least this time no random pieces of the scenery went flying toward the boy as Sinister continued his fuming. Behind them both the tesseract disappeared, leaving the sight of a long hallway.