Mad Men: What Vanity Fair Thinks About Episode #3

This post in Vanity Fair about Mad Men episode # 3 really praised Lane's debauched night with Don Draper. However, writer Bruce Handy seems to knock last week's episode when Draper slept with his secretary. "Sleeping with his nice, compliant secretary last week was his single biggest sin in the entire history of Mad Men," wrote Handy. Not sure if Handy means that the story hopped the tracked and that was a sin, or that Don Drapers behavior was sinful. What do you think?