In the absence of FCAPI support for the PLO negotiators, the latter had no option but to play along with Kerry's proposals.
Instead of waiting for Abbas to go to talk with the FCAPI, Kerry brought the Arab League diplomats to Amman and had them agree to his proposals without prior consultation with the PLO.
In Amman, members of the FCAPI issued a statement saying that Kerry's ideas for the resumption of talks were a 'suitable foundation' for further negotiations.
As a result of all this, the FCAPI has let down the Palestinians, and it is not the first time that this has happened.
Israel, of course, is pleased to see the FCAPI offer concessions that the Palestinians do not seem willing to make.