The players need to start putting in effort, both in training and especially games. This would help put them in the shop window if they want to leave and also repay the fans who have suffered weak performances for long enough.
All fans, at every club, can cop getting beaten provided they see effort from the team. If the players do this then they will leave a positive legacy, if they depart. Just look at the reception Ben Cockayne used to get when he played against Hull KR.
Fans don't turn on players/teams for getting beat, they turn on them when they don't wear the shirt with pride every week.