shame I missed it but I need to practise.
I swear I hit a bug in the menu earlier. Missus was asking to play before the kids went to bed. I went into smash mode and on the character screen I suddenly stopped being in control of the cursor. Instead she had control, despite the fact I was still controller one and I had clicked the previous menu to get to the character screen. I went back and then in again but it was the same, she was player one (with controller 2). wtf?