Archimedes I like your approach but I think that all this will do is buy time.
The Argies will reject such a referendum based on their belief that Falkland Islanders do not have the right to determine their destiny as they are on borrowed ground - in much the same way as the Palestenians view the Israelis.
The communications I've read point towards USAN contesting the UK's claim to the Falklands using all kinds of cultural, political and geographical arguments to support this. Technicalities currently in favour of the UK are viewed as part of the UK's colonial influence which is as wrong as the 'occupation' of the Falklands itself!
Given that regional oilex has so far been negative I wonder whether resources are the motivation?
Earl