A predictable split

As would be expected, there's been lots of discussion of Jim Karygiannis' resignation as Joe Volpe's campaign manager, mostly in the context of wondering whether this will finally cause Volpe to drop out of the race just a few months too late.

But what does it say about Karygiannis that he:
(a) left the campaign over disagreement over a single policy point (even granting that I'd agree with Karygiannis in the argument) rather than the continuing saga of Apotex, questionable donations and repeated shots by Volpe at his own foot; and
(b) apparently wasn't sufficiently aware of Volpe's track record of favouring Israel's position ahead of all else to identify the potential problem long before he signed onto the campaign?

Update: And to show the depth of the belief he's supposedly defending, Karygiannis apparently hasn't ruled out returning to the Volpe camp:

Later, Karygiannis said he quit, adding he might work for another candidate's campaign or even go back to Volpe.

"People's minds do change," he said.