These things always get blown out of proportion, even if there is truth to it, anyways. All it takes is one frustrating game, Lee, out of frustration, vents to someone about how he is being used. Then it goes through the grapevine, and suddenly he is miserable and there is a rift in the lockerroom.
Everyone gets frustrated at their job from time to time. It doesn't mean that your feelings in that moment carry over beyond that.