I don't have any direct information about his disdain for the Blazers front office and it is perfectly possible that his retirement was entirely clear of any of my insinuations. But, they are on their 4th GM in a the last two years, running off Pritchard and Rich Cho (who both have jobs as GM's again) and their owner is mercurial to say the least. They hired an entirely new assistant coaching staff (the loss of Monty Williams was huge).
It is all circumstantial of course, so I am most likely wrong.