Yep, Besides the randomness of Glenn's death, that is not being after the enie meanie thing, thats almost exactly how it looked in the comic. Including him talking to Maggie.
Its just more shocking in color on T.V. AMC is in a damned if they do damned if they don't position on the Lucille scene. People that don't read the comic think it went too far, but if they showed any less the people that do read the comic would be pissed.
I think they did a good job by giving you the perspective of Rick. It's meant to be a hopeless breaking situation. The viewer is meant to be traumatized like the group is.