i totally agree really the shaving foam is pointless peice of nonsenseHAHAHAHA that's brilliant. I love anything that highlights what an incredibly stupid idea this shaving cream nonsense is.
IMO yes, that would be cautionable. He's trying to cheat to gain an advantage and interfering with a referee marking.
Though I always think it's funny how wall encroachment is a caution, but we seem to be a bit more lenient on forwards doing the sneaky to move the ball forwards....