As well as the youth of the team, you also have to consider how many games our small, inexperienced squad have played this season. Taylor, Holmes, Palmer etc. are virtual ever presents and have had no real rest all season.
I think it must be tremendously mentally tiring to play in a top of the table side for 5 and a half months where the opposition are up and at you every game from the first whistle. It looked like the players were not trying on Saturday but maybe they just had nothing left in the tank ? Possibly Saturday's performance just demonstrates how well we have done to cope with the pressure of being top in previous games and stay there as long as we have.
Despite Wallace's youth, I think his return will benefit us greatly as he is a naturally strong character and leader on the pitch.