Think it was tactical. Melon didn't mention it on Radio Sheffield and if it was an injury Brek Sweat wouldn't have spent ten minutes waiting to come on stood like a lemon by the dugout.
I think the question is with regard to the reason why he stormed straight down the tunnel after leaving the pitch and didn't go anywhere near the dugout. My assumption was a major strop at the time. Hope I'm wrong on this though.