For Leigh Steinberg, the bottom included a diaper

The new episode of Real Sports with Bryant Gumbel debuts Tuesday night on HBO (10:00 p.m. ET/PT).  The show includes a closer look at the stunning disintegration of agent Leigh Steinberg’s career, by Armen Keteyian. Though much focus has been placed on Steinberg’s more recent alcohol-fueled escapades, the problem had been festering for years.  Former…