Henry’s expression was very well done. He’s got to feel like total shit. His whole way of coping was to cling to his anger, hurt and resentment and direct it towards Carter who, at every turn, proves himself to be a true friend who really did do the right thing. And now Henry has good reason to believe Beverly may be at fault.
You know what would have been an interesting twist? Instead of Carter’s concussion being what caused the problems with the therapy goggles, someone like Stark or some other genius could have discovered the problem was caused because Carter’s memories had been recently tampered with, and they start to investigate. Now that would really make Henry hit the Maalox.