why was Gus Poyet sacked?

[Blackpuddin]

Anybody know? I've been delving back through BBC news pieces but at no point is a reason given. His team finished 4th last year I gather so it wouldn't appear to be performance related. Just curious.

[Blackpuddin]

He came across decidedly shifty on the MOTD when he was 'surprised' to hear the news of his sacking.