The owner of pioneering D.C. gay and lesbian bookstore Lambda Rising, Deacon Maccubbin, announced his impending retirement late last year. Since then, messages on the store’s Facebook page have estimated a final closing date of Jan. 17, just a couple weeks from now, and 35 years since it first opened. With emotions running high, it’s not difficult to understand why employees overseeing the final clearance push weren’t thrilled to discover Wednesday that the Connecticut Ave….