I haven't watched the video yet but I thought Mick getting off the stretcher wasn't scripted. He was seriously hurt and he should have gone to hospital at that moment.
When Terry Funk stepped in to get beaten up by the Undertaker, Foley was unconscious.
This was all unscripted.
Of course it wasn't scripted that Mick was to be ko'ed. But both falls and Mick returning was scripted! Its in his autobiography. Only taker, mick, vince, pat patterson and the ref knew what was gonna happen. Hell, ahem, of an angle though.