Tony's lip curled at the seething wound, just as taken aback by its appearance as he was that his attack had actually seemed to work. It didn't close up, anyway, like the strange silvery wounds Elektra had caused. Good thing to take advantage of, and take care of the reinforcements later. Gambit certainly liked to show up at really inopportune moments, and didn't appear to have any qualms switching sides.
Iron Man took to the air, shooting straight up out of any direct line of attack and aiming another blast at Sinister. He wasn't looking too happy-- another good hit and; "Quicksilver! Make yourself useful!" Maybe this was meant to end well, as badly as it had started.