He answered questions about why he's back in a recent, in-depth interview (link here). The reasons are pretty straightforward: his mainstream film career did not pan out and he enjoyed doing porn, so he thought he'd come back for more fun. I know he has his detractors, but he has such a magnificent body that it's hard not to watch him in action.
The originals for these photos are huge and total more than ninety images in three different hardcore shoots featuring Francois, two since he returned and one from before he retired. To download the complete collection in a free zipped folder, you should click here.