I find it bizarre that people still comment on this as if it's something he personally does and is nothing to do with any tactics or game plan.
OK, let's try this another way. What is it about Wallace that means that coaches think it's a good tactic for him (and nobody else at the moment) to stand a significant distance away from the breakdown, on the wing or even off the pitch, and is that aspect of him the reason why he is seemingly out of favour with Gustard?