I was absolutely certain my Wing was permanently bricked but I just got the official rom to load. If anyone has a problem where you get into the bootloader and start the RUU update process but the status bar only gets to 1% and then the Wing reboots this is what you should try:
when the device reboots to the splash screen and you hear the USB disconnect sound on your PC (looking as if the load failed) quickly press the camera button and the soft reset to enter the bootloader again before the RUU app on your PC displays a connection error. The load finished when I did this.
I must have tried to reload 8-9 times before I thought this was worth a shot.
I suggest you follow all of the instructions given by the experts here in the forums first but if you have the problem where:
1. the RUU load gets to ~1%
2. you then hear the USB disconnect sound on your PC
3. the Wing hangs on the splash screen
4. the RUU displays a connection error message and asks you to recover.
Then I would try this - otherwise be patient and wait for the rom to load.