Maybe not Richo's exit on its own, even though im sure there are some personal relationships there, but the overall chaos and embarassment, the constant media and online commentary, I think it could effect morale in the group.
Winning teams identify something greater than themselves to play for - whether its people, place or a philosophy. The chaos of the last few weeks would not have helped this cause, particularly if they believe Benji is already on borrowed time.
I agree though, if they want to keep playing under Benji they need to improve again this year.