It already hurt enough to hit the ground, and then Captain America was bowling Whiplash over and wrenching his arm behind him. There didn't seem to be much fight left in him after a hit like that. The whip was obediently depowered and retracted into the gauntlet, but Whiplash continued to glower towards the now Normal Sized Girl and Iron Man.
After getting his bearings on the ground and taking in the destruction around him-- the multi-car pile-up, the ambulances, fire trucks and police cruisers, the highway stretching in both directions jammed with standstill traffic-- Tony stumbled towards Cassie as she shrank, pale and with a hand over his heart, his suit parred down to just the familiar underarmor for his RT to support. "You okay, baby?" he asked, knowing she wasn't, but looking rather desperate for any response from her to assure himself that she didn't completely hate him. He had ruined her birthday and now he didn't even have a gift for her to make up for it, not to mention the possible body count. Tony knew why he conveniently forgot birthdays now. It was better for everyone if he was out of town.