Got the goss on this from the Skipper. He's a semi-regular reader of PPRUNE but I don't know if he's a contributor.
#1 EDP Failure. DDG consulted and Maintanance plus Ops procedure. Back to blox and comply with DDG. Push back 15 minutes later. JFK ATC excellent and aircraft blasted off landing runway (13L) without undue delay.
Nothing to see, move along!
Traffic, the 'disaster' referred to was more about me than any efforts by QF in JFK!