[identity profile] dreadedcandiru2.livejournal.com 2014-10-08 02:15 pm (UTC)(link)
The leading theory is that he's still undergoing regeneration trauma....or that Missy is the part of his mind that cares.

[identity profile] nelc.livejournal.com 2014-10-08 06:49 pm (UTC)(link)
To get Doylist about it, I think they're trying to bridge the character from Malcolm Tucker to a less asshole-ish Doctor Who, but they aren't there yet.
Edited 2014-10-08 18:49 (UTC)

[identity profile] dreadedcandiru2.livejournal.com 2014-10-08 07:24 pm (UTC)(link)
Which means that we're going to end up with the Davison Doctor with attack eyebrows as we head into Series 9.