I've only seen people step off the tenure track permanently. I don't know how hard they tried to get back on, if at all. I suspect its quite difficult. I would probably only leave TT for a post-doc if I knew that the post-doc had some potential for growing into something else a bit less temporary (i.e., its at a big lab or a university with many similar sorts of openings).
I doubt the OP is going to be competitive for a post-doc 5 years post PhD with only two publications.
I quit my tenured job and trying to get onto the tenure-track equivalent in another country. Lots of interviews but no success yet. But I have had two non-tenure track jobs since quitting in 2007. Well one, the second one is starting in January. It's at rank of what would be a full-prof in the US and commensurate pay but only for a year. Previous one paid what a post-doc usually gets paid in this country. But I have 1 1/2 orders of magnitude more publications than the OP.