I have mixed feelings about Tocchet at this point.
I think his systems construction is lacking, but that could be solved with adding some experience to the Canucks' very thin coaching roster.
His player management has been generally good, and it's not his fault that divisions from previous regimes are coming back into focus. However, if he was the one who told Miller to "toughen" Pettersson up, that is unfathomable stupid. At this point though, I suspect it might have come from higher up..
Unless the Canucks have a clear upgrade available, I think you have to bring him back next season. If things are back on track at the midseason mark, you extend him, but if not, it's in everyone's best interest to find a different path.