Welllllllll....yes I have done a "few" solo dives over the years. In retrospect, I was fortunate not to have any "major" issues while "soloing". In certain situations, as BamaCaveDiver has pointed out, solo is the way to do it. Diving side mount lends itself to solo diving. I personally would not do it in a confined space situation, too many things can get into a pickle and not get you out. I have done close to 50 cave dives solo, and looking back, I would not do it again.
As for my mommy, what she doesn't know, won't kill me. As for the wife (ex), well, that is totally different ball of wax!