I'm not convinced must have seen it a 100 times now and I still can't say for sure he didn't get clipped. Doesn't mean it was a foul though, what's happened to accidental contact? Couldn't the ref just have waved play on?
Say what you like about Mirallas he does have the ability to score good goals and make something from nothing. He should have been given time yesterday.
As long as the players are maintaining the current level of performance it would be crazy to change the side.
What I don't want to see though is this 11 run into the ground. Martinez needs to recognize when changes need to be made and then be decisive.