Hotend Leaking Filament

I was having some problems with a jam in my printer head last week. So I removed the nozzle and soaked it in some SCIGRIP. I replaced the nozzle and began what was going to be a 5 hour print. Well after about two hours in I noticed the hotend had leaked the PLA filament all over the front as pictured below. I stopped the print fearing that it might cause some serious problems. Does anyone have any suggestions on what might be causing this to happen and or how to fix it? Does the hotend need to be replaced?

You heat brake is not tightened against the nozzle, thats why it’s leaking. Read my nozzle change howto in my signature.