Uncited source + generally stupid political strategy = lame hoax
I'm no genius or anything, but I'm fairly certain that if the Dems change their VP pick at this point, it will be the end of Obama. The parties can't afford to play musical candidates and expect the voters to back them. There might still be a lot of Hillary supporters out there, but the general populace already distrusts politicians, and a move like this would be so transparent that I would have to assume that even the densest voter would have to see right through it. I really don't think Clinton is at all the threat that she was before Obama and Palin stepped into the ring, and furthermore, I doubt that Clinton would accept an offer to be VP after she got so close to the Presidency.
/rant
"Property is the fruit of labor...property is desirable...is a positive good in the world. That some should be rich shows that others may become rich, and hence is just encouragement to industry and enterprise. Let not him who is houseless pull down the house of another; but let him labor diligently and build one for himself, thus by example assuring that his own shall be safe from violence when built."
-Abraham Lincoln, March 21, 1864