Daaaaamn...that is actually a lot man. I had a few hermies (down to two now) around and none of them have sprouted that many...maybe combined from all 4 I had? If they have had decent pH (what are you growing in anyway?) and no light stress etc, then that is a genetic hermie. You probably wont want the seeds from it IMHO, as most likely the resulting progeny will also be hermie. Not a guarantee, but I have seen it first hand....
This is exactly how I got a couple of the hermies I have now. A buddy had some plants hermie on him, so he gave them to me to finish out (was great smoke btw). Once I cut them down I started collecting the seeds. I planted 10 of them, and I was able to keep a grand total of......one.
The rest were so heavily hermied they were not worth holding onto. This last one I have though, I have pulled maybe 10 male flowers off of it in almost 8 weeks of flowering. I still have a handful of seeds though from it, so we shall see what happens next time around.
Good luck, keep an eye on that thing. Also...someone mention this product in my thread. It's from Dutch Master:
http://www.dutchmaster.com.au/?language=english&page=product&product=REVERSE
I have heard good things. Pretty sure I am going to run it on clones of some of my current hermies in my next run.