I do think Everton has now become must-win to be honest. It's a home game for a start. A point is absolute bare minimum. If we lose we still have West Ham and Burnley, but it's really cutting it fine. Anything can happen on final day. Even if Burnley were down by then, Sod's law dictates they'll try and make the most of their final Premiership game for a while.
I also worry that a defeat against Everton could cause Sherwood (yes even Sherwood) to doubt himself a little. He may air a little more to the side of caution. That could well help, but it may negate our new found attacking threat, and ultimately we're only gonna stay up by scoring goals and winning games.