Another lovely grid from Mr. Berry. I think of that central, staggered stack as something of a trademark of his. Three perfectly normal two-word entries, crossed with nothing but solid fill and good clueing.
Interesting trivia in 52A: 1963 song investigated by the F.B.I. for supposedly obscene lyrics (LOUIELOUIE). Really? REALLY?? … our tax dollars hard at work. In other news, I didn't realize that PABST was the "1D: Brewer of Schlitz, nowadays," but that's kind of like hearing that all of the burgers at Jack In The Box are made by Denny's. It's something that will never affect me in any way and makes no difference to anything, anywhere.
Enjoyed GEOLOGIST (32D: Fault finder?), MORASS (24D: Hard-to-escape situation), BACKTALKS (30D: Answers wrongly?), and the clue for UMPING (27D: Working while others play?). There's some sub-par stuff, like OMAN, OAKEN, SKAT, and DOIN, INGE, AGRA but they're really not that terrible. Just a little dull, maybe.
I enjoyed it well enough.