'Dry Drunk', in my experience, is something that some AA members use as a pejorative.
for example - i am 10 months sober. for the first 8 months i attended regular meetings and was therefore a Sober Alcoholic. i haven't been to AA very often lately. according to some, i am now a Dry Drunk.
please understand that my stance is not anti-AA. AA saved my life and i work my own programme daily. the Dry Drunk theory is by no means the party line - but it does sometimes get brought up.