Great news everyone.
They told me that they would send me a voucher for a new TMA-2 headband (ho-2 style) and some of the TMA-2 drivers (so2) free of charge, and that I should just keep the cable and earpads. They then asked me to cut the cords between the earcups and headband, take a photo of it, and send it to them so that they wouldn't have to take my broken pair back. The new pair is already en route, shipping and tax covered by them as well!
Overall a great experience and one that made me love the AIAIAI brand even more.