Yep, it was probably feeling resentful at moving after so much inactivity, which I can sympathise with. Luckily the allen key for the handlebar clamp screw was one of the few items in the pitiful toolkit, and kicking the sidestand up and down several times sorted the cut out. I guess the cut out switch on the sidestand needs looking at, or perhaps it thought it was in gear.
Anyway, I had a lovely ride, it went, handled, stopped, all with a glorious termigioni soundtrack.
Cheers