The answer will depend significantly on the country you're in, and of course with the current economic situation, need I mention that this is not the best time to jump ship? Overall, I think it would be difficult to get the kind of research position you may have had after the PhD, and a lot easier to leverage your industry experience into a position related to your current field (which I realize may not be quite what you're looking for). That's even assuming that the university system you're thinking about even cares about industry and giving students job skills that are current, which is where your mileage may vary tremendously, especially from country to country.
Oh, and BTW I doubt that your MO activity will be all that useful in your transition. Still, thanks for contributing!