Absolutely! The time I did that hill in a rino the same thing happened, I put on the brake then quickly realized that was the wrong thing to do! No replacement for seat time.
When I'm spotting people I will often go through a "preflight" chat whenever I think a roll or flop is possible. "If I yell go, you hit the gas and turn "x" direction" "If I yell clutch, smash it in and don't hit the brake until I say brake". Our 2-door JK was nose happy. Both the wife and I nearly put it end over end. A turn and gas settled it down in my case, but the wife needed to nail the clutch to bring it down. These were both fairly exciting moments LOL.