When dealing with the likes of Pat McL on this issue, it is important to stick to the details and avoid the diversions. Pat has only propaganda and avoidance strategies. What we know is that there was an offer made by the British and the PSF position was to deny any such thing for several years until the point could be proven.
The offer was part of a negotiation strategy involving a clique of people around Gerry Adams and it was apparently witheld from SF, the IRA army council and at least some of the hunger strikers.
It's at around this point that the likes of Pat runs into difficulty as the mantra starts to fray.