I always gave my T the benefit of the doubt, it made things easier for me to just assume I was wrong :-)

So, if my T had said this to me, knowing my T, I would have assumed it didn't mean what I thought it meant. So, what could it mean, where is there a different meaning?

Parse it! LOL I'd separate it into "I'd better not hear" and "that you put your head in the sand". It could mean that it's okay to put my head in the sand still but s/he doesn't want to hear about that. So, what does s/he want to hear?

"You left for two weeks and I was confused and angry the whole time, thinking you gave me a paradox, 'an anomalous juxtaposition of incongruous ideas for the sake of striking exposition or unexpected insight' to figure out and it was a lot of hard work and bother! A plague on you, never go away again!"

See: http://en.wikipedia.org/wiki/Paradox_(literature)