Done that, funnily enough the card is in my laptop right now and there are no problems/errors with it. Iv tried the phone with 3 different cards. Its that damn sensor inside the phone which detects the magnet on the back cover!

The best way to approach this would be a kernel patch which basically told the phone to disregard the back cover and just accept the MMC as always being there! I don't have enough experience with kernel hacking