Who let the cat out (of the bag)?

Now we smell a rat, we do.

The UPA Government was blamed robustly for its alleged opacity in keeping the nuke deal text as big a secret as the face of a newly wed Hindu bride of yore.
And then the text was plunged in toto on an American website.
And then the IAEA spokesperson Melissa Fleming claimed sheer absence of any restrictions on the publicizing of the treaty.

Seems like our ruling party is having a severe egg-on-the-face trouble. And not just any egg, but that of an ostrich. And everyone who can, is having all the fun he can have with this egg, churning and churning it to make proper eggnog.

But while everyone else is preoccupied with reading between the lines of the agreement, here is our query - who was it that made the text public? And why?Since we have no idea of the truth, let's make a volley of speculations. Well perhaps not a volley, to be exact 'cause I can think of a mere two -

A random event? If so, the co-incidence couldn't have been timed better.
Left and/or the BJP? If so, I ought to give them more credit for their overseas ties. I guess their MPs must be actually doing something during their trips abroad.

More options, are there any?