Yep, same thing happened to me twice now. Human Mage too.
Going to try and save immediately after respeccing then load the game and see if that can bypass it, will respond here to notify if this helps fix the issue.
edit: It seems saving immediately after respeccing can save you from a crash. I experienced a black screen crash when trying to load the save right after. But once you shut it down, enter the game again and reload the save it should work as normal.
Here's hoping there isn't any "taint" on my file now that is going to make me crash later down the track.... First major issue I've had playing this game, not bad considering I'm 65 hours in.