Getting a second doctorate

I have a PhD from a reasonably good program in pure math, but I had no support from my department or adviser and so went into industry afterward. I'm unhappy with the situation, and I'd love to return to academia. The situation is a bit tricky, though, and I was wondering if a second doctorate (whether again in math or in another related area like mathematical physics) would help at all. Further complicating the issue is the fact that I've been in industry for the last decade, so my CV has hardly gotten any better than it was when I applied, or even left, grad school the first time. (The situation may be different in other areas, but there's very little you can do in industry that looks appealing to an admissions committee in pure math.) So, would applying to PhD #2 be a waste of time, or is this a weird but possible means of clawing my way back into academia?