Possibly.
But for very different reasons, it could be argued Grealish did it purely for emotional or sentimental reasons with regards to not wanting to play against his boyhood club, admittedly still not very professional but a better reason than doing it just because you're a spineless coward and flat track bully who doesn't have the balls or the talent to face a vastly superior side who happen to supposedly be your biggest rivals... especially considering his actions in wanting to be subbed off in their last meeting, the "7 goal thriller"