So not what i did to the bike but the bike scared the absolute shit outta me, doing 80 on the motorway in standard mode coming up to my junction, tap the mode button to whack it in A mode for the nice sweeper off the motorway and following twisties, acidently push mode button twice and end up in underpowered B mode, no worries tap it another few times back to A open the throttle expecting all hell to beeak loose........
Nothing......
Completley dead throttle......
Switch modes still nothing......
Down the gears into the hard shoulder, nearly lock the rear as i downshift.....
Restart bike, fine.......
Get off motorway and try same again, close throttle switch mode, open throttle fine, and again fine, go through repetedley, same thing happens and bike dies......
Get home after sticking in std mode and ring yammy dealer, never heard of ot so they ring yamaha, looks like i basically confused the ride by wire system and ecu by asking it to change that many times before opening the throttle, see how i go but seems a bit of a flaw to me, juat glad to be home after the inital motorway episode and locked rear....

Remember: If in Doubt use Full Throttle, It may not make the situation any better, But it will end the suspense...