I must admit had the clowns clip been included in this recent re-mastering of U2 at Red Rocks I would have been surprised. I feel there is more to this than we know, and you could be right Max with your theory. But I agree with dmway that Electric Co. is spoilt by its abscence.
Many years ago, and I am talking about pre u2.com and pre computers and google, I managed to aquire a vinyl copy of Under a Blood Red Sky unedited, so it included the offending Clowns content. I had tracked this down through record collector magazine and was intrigued enough at the time to contact Island Records to find out a bit more. I was a bit taken aback when the chap I was talking to thought I was lucky to have got my hands on a copy as they had been withdrawn from sale due to the controversy over Stephen Sondheim’s lyrics and legal action. So for years I was under the impression that I had something rather rare. Only to find out with the arrival of the internet that there are CD copies / laserdiscs and apparently video tapes out there with unedited content. So not as rare as I first thought and as Bigwave mentioned the concert and CD have come out in many formats over the years and as I have since found out also in different edits.