If simple notions of one's powers and their personality traits played into each other, well that would make sense why John was such a hothead regarding certain things.
"That's true, but that could have easily went the other direction." He just had decided that the direction he went was towards, aligned with the X-Men. Who would have guessed that? Nonetheless, his mind was always aligned with mutants as a whole. Between the X-Men and the Brotherhood, they both wanted better for mutants, it's just as it stood John understood a bit more clearly that the Brotherhood was in the wrong. His decision would be the same if he had the same opportunity.
The shock was two directional. Never did he actually consider that he'd be standing in a hallway naked with Kitty of the X-Men, about to delve down some crazy path of exploits. Her command rang out in his ear firmly. "Yes, ma'am." He obliged.
Arm moving from her chin, to snake around the small of her back, he pulled her right against him and pressed his mouth to hers. It was heated, it was fueled by the metaphorical fires in his soul and he was all about it.