here in my tread you can see (bad) photos of my complete desoldered usb erupters.
https://bitcointalk.org/index.php?topic=270367.0btw. fuses are set... i cant read firmware dump from attiny. (but maybe there are some sticks with open fuses?)
I wondered about the fuses, I guess it would be back to bus capturing, I was right about to do this when some people brought to my attention about the mining software being the issue with the slow down. Would still like to make a schematic of the device but until I kill one I guess I'll wait.