Oh pants !
And I was looking so forward to the rope & tree scenario
I've always thought about rope & loft. But knowing my luck I'd probably do it all wrong and end up coming through the bedroom ceiling & landing on top of my mother killing her instead !!!
My understanding (as i was watching United V Watford, in a different room (whilst checking this tread for updates)) was this is resolved by holding the power button on the top left.
maybe it causes a soft re-set - i don't know, but it worked.