I dont think its going to be openly aired. Its not in anyone's interest- at least not to tell all sides of it.
It is not necessarily as cut and dry as "competence". It could be a cluster of irritants, most of which may not even be policy/issues.
But I'm inclined to agree that probably its not just the LGR. I dont like the fact that the NDP I think needlessly stirred the pot again [before Mulcair became leader]. And it looks like Mulcair did what he could given that situation [ETA: looks like maybe that isnt true. Dont know enough to say.] He contributed to the situation as it is, but that still doesnt make him sole owner of it not being fixed.
Even if Hyer quietly does not re-offer to run as an independent, it isnt going to be easy to win that seat, and it isnt going to help the NDP in a number of other seats. We'll be seen as completely responsible, not Hyer.