I've long suspected that the reason Sour was "around" for a while was because he started this habit of making a horse noise toward the end of his calls -- on HSS and WUS. Since Howard is so sensitive toward this breed, I think he put Sour on hiatus. My theory was reinforced when Howard-the-liar mode came out a few weeks ago. Someone called in and asked why Sour wasn't on anymore. As Howard always does when he's about to lie, he starts fumbling around, feebly making stuff up on the fly. 'We haven't heard from him', 'Sour decides when to call' and 'Sour doesn't call in anymore'. (Like when he told David Arquette that he didn't look at the caller screen at all during the two hour Louis CK interview.) But good ol' Booey came waddling in to inadvertently expose Howard's bullshit lies, 'Boff, boff, Sour calls 10 times a day, I have a bunch of messages on my machine right now'. So, unless you think Sour only calls after hours, you can bet his name has been on the caller screen almost daily. But Howard has been afraid to pick up. I bet a little talk was had with Sour regarding the horse noise and now he's back on again. Howard gets spooked easily and was frightened of the Beth inference, but Sour is just too fucking funny to not have on, so he gave in.