And he was cleared by a neutral medical professional?
That may not have been a seizure, but it was something, and it was not good. His arms are bent and rigid and his hands are shaking. Maybe the people on the sidelines did not see it, but surely the Texans have somebody upstairs watching the game and checking replays for important things like whether to throw the challenge flag. Maybe one of those guys can call down to the sidelines when they see Savage going back in the game and say WTF are we doing? Get him out! Even the ref that was by his side when he went down should have taken it upon himself to stop the game and question the Texans about putting Savage back in after what he saw. That was awful.