Hey nfmOus
I can asure you that you are in the right place for ANY QUESTIONS about anything to do with growing marijuana. I can almost guarantee that if you spend enough time looking around this site that you will find that this question and many others like it have been answered many times.
If you read this grow journal
http://www.marijuanapassion.com/forum/showthread.php?t=47623&page=5
by First Time Caller you will find what most do with a hermie after spending enough time around here.
I'm in diapers as far as grow knowledge compared to most around here....but
IMO it's actually simple.....you have either two choice you either yank it, or you grow it out. If you have more than one plant it will seed it's self and the rest. If you have only this one hermie plant......you really don't have much to loose by letting it go a bit longer.
The choice is really up to you and depends on your situation.
IMO Spend some time reading through some of these journals, it's fun and it will help you to make the right choices for your plants.
I know it's hard to read them with all those great pics of giant buds!!!!! LOL
But try not to get frustrated, you are in the right place to learn how to grow the best dope you have ever smoked.
Patients my friend...... patients!!!!
That's My Two Cents.
Peace and GOOD LUCK!!!
MBT