I don't really know... but if you allready have an D2Ckey installed, and you just un-solder the +5 and GND, doesn't that just shut down the chip so you can install your Argon?
edit: ARGON UPDATE
It seems that team Infectus takes all the problems serious now, since they ask users to post photo's of the Argon setup. They also are trying to look for problems within the software. I'm not quite sure, but since the first load of Argon's has allready been shipped to the resellers in Europe that would mean that the software ON the Argon is still buggy and there is no chance of re-programming him yet since the programmer only comes out in january (you can still buy an Infectus though).