Spidey sense says no. Gray (the actor) did a panel during a Comic-Con in which he said "I went out for a part of a psychopathic killer for a nighttime soap and one of the guys on production said I couldn't do it. It didn't work. After a while I gave it up and tried something else. I moved up north and worked in theatre education for kids. Eventually I came back down to LA to give it another shot, but again, it didn't work. I had odd jobs here and there and then I found a lady, got married and ran a flower shop for many years. After too many hours working and not enough money, I quit that too, and now I work in one of the best men's clothing stores in the country. It's a job and I enjoy it."
If he were stage managing at any point, I think he’d have mentioned it (especially for a high profile gig like Johnny).
