The video has to come out now, because she didn't get what she wanted in the primaries. Right now, it looks like Obama is the nominee. So he has to be stopped before the convention. Priamries are over -- and the video is coming out. There's no coincidence there. Hillary needs this.
On the other hand, if everyone knows that Hillary is destroying Obama, that's not so good for her. So it's important that Hillary "doesn't have a copy". This was uncovered -- you see -- by a Republican who is "no longer in the race".
Obama gets kocked out. Hillary gets the nomination. The GOP gets the blame.
Obviously: the best game plan for the GOP would be for this to come out in October. The fact that it's coming out in June tells you everything you need to know.
THE REAL HILLARY CLINTON: Episode #1 - Paul Fray, F****** Jew B*st*rd
She's certainly got chutzpah.
The GOP would indeed wait until later in the year.