i've had male patients in pretty good health in the 125 range at 68 ins or so. i guess mike was around 72 ins...so he probably was pushing it but his personal chef (red fox's niece) said he did eat healthy. too bad the drug monster got him too.
I think the report mentions MJ being about 69", so he's still 11lbs heavier than what you mentioned. I'm not saying he's the worlds lightest person or anything, just that being as tall as he was and that thin was freakishly skinny.
I would say the worst person I've ever heard of, skinny/weight wise, would be a female that came to a friends office and was about 5'5" and weight 76lbs. She would eat once a month, and was still taking diuretics/laxatives and drinking water every so often just to not feel dehydrated. Obviously, a sever anorexic. And she still felt fat!