This is the point that I realise, as is ever the case, that I should have threaded some more suitable heat-shrink onto the cable _before_ soldering it. Anyway, have some that just fits over the USB-C connector... it'll do. Bit of hot-glue to the wires for strain-relief, bit more hot glue, squeeze on the case, squirt in some more hot glue, bit of hot glue in the heat-shrink, hit it with the hot air gun... it'll do! It's not pretty, but it works!
You too can do this. I am not an electrical engineer, merely a rather amateur hobbyist.
#Repair your things! :)
If you don't have the tools find yourself a friendly #RepairCafe or #MakeSpace
Saves me spending £16 on another dodgy mic, and I feel less bad about NOT taking up the dodgy seller on their £30 voucher for a 5-star Amazon review now: https://toot.ale.gd/@yvan/113843337766109815
Hopefully it lasts me a while longer.