Ok, update time (click here for a recap:
http://www.neogaf.com/forum/showpost.php?p=217419977&postcount=10129)
So, when I got home I tried unplugging my front audio port from the motherboard and used my PC for 10 mins. Everything seemed fine. I plugged the front audio port in, and at first everything was working normally (this was surprising). However, after half an hour, it turned to shit again and my PC kept detecting non-existent audio devices being plugged in and removed from the front ports.
Now, as a last ditch effort I tried to uninstall my realtek drivers. But the problem still persists (it's just slightly less visible) because when I click volume control I can intermittently see "Headphones" as an option.
I will re-install the realtek drivers and use my pc with the front audio port disconnected for a while. If the problem is totally gone after hours of use, it seems like I am left with no option but to contact the manufacturer of the case.
It's going to suck having to disassemble and reconstruct my entire PC, just to deal with this audio issue. If I didn't spend a lot of money on this build I wouldn't be so obsessive over something this minor. But everything should just work (and I pray to all gods of every religion that I don't end up re-assembling my entire PC just to find out it was the mobo that is causing headache).
I did such a good job with wire management as well...