More chance of me winning the lottery than this being true.
Unless that person knows someone, in Michael Jackson's inner circle/management/estate, there is literally no way they could have obtained them. It's not even remotely possible. Where is the Kim Wilde footage? Why isn't it uploaded? How come no other Kim Wilde fans know or talk about this? Why are they commenting on a Jackson video? Shouldn't they be telling the KM fanbase?
You really think a guy, who was incredibly nit picky about his performances (His comments over Motown, not playing Thriller live for 5 years because he hated how it sounded, the "Watch your tone remark" from the Bad tour mid gig, the miming on follow up tours because he wanted everything to sound like the record) is going to let those shows get leaked without his official permission and creative input?
Unless his Estate or Management leaked it but, even then, not likely