Testimony of people like Larry Johnson doesn't impress me. The fact that her supervisor said it was legit just makes me ask why he wasn't fired. It was the worst cover possible: a company with no phyisical location, a single employee, and no product or service. Anybody who looked her up at the time she was supposedly covered would find nothing, then they would notice that she lives near the CIA in VA instead of Boston, and would easily guess the rest.
Since you are now such a stickler for evidence that you will credit, how do you know this? Because you read an article about what the office looked like long after she was recalled to DC?
Sounds to me like you'll believe what you want to believe, and discredit what you don't want to believe - what do you know about Larry Johnson, other than his comments on the Plame case? As far as her supervisor who confirmed her NOC status being fired - he hasn't been with the agency for 10 years.