I think most managers would have had sufficient sense to realise that despite working really well the season before, there needed to be a tweak to the approach last season when things went terribly wrong.
The fact that he seemingly used every bit of downtime to jump on a plane somewhere, rather than maybe stay at Melwood and sort things out, was a massive red flag and couldn't have purely been linked to a set methodology.
Basically I'm saying he seems to have half-arsed it.