That apparently is what United Future's former MP is being called around Parliament. And he deserves it. Not because he jumped parties (something I regard as part of the normal political process), but because like Kopu he wants to continue to collect his MP's salary while not actually bothering to be there. Instead, he thinks that the "tremendous public support" he has received permits him to spend his time away from Parliament building his party, and that he can represent his constituents by not being there.
This wasn't acceptable when ACT was doing it, and its not acceptable for Copeland either. If he's not going to bother to turn up, then he really shouldn't be an MP at all.