Okay, I conducted some Hamfirst research!

Here is someone on another site inquiring about him: http://contortionistsunite.ning.com/forum/topics/whos-hamfist

The info from the above link leads to the name Ian North

http://hamfist.mindsay.com/

Seems a little shady since he's singling out double jointed girls to contact him but I'm not a contortionist trainer and don't know what's normal or if there even is a general pattern when it comes to their interests …

the name leads to a contortionist in traingin using advice from an Ian North and thanking him for his help (the web page is dedicated to him and contains her online journal)

http://www.angelfire.com/freak/contortion/journal.html

I can't be sure if these are all the same person or if any of the info is even legit since this is all from a 5min google search but it's what comes up.