It couldn't include New Orleans, but other than that I think its possible. All that the US really cared about in the deal was New Orleans, and the rest was just a bonus that Napoleon offered because he needed the funds. Lets say he sells New Orleans but not the rest, and a while down the line sees that his war is a lost cause, so he abdicated and flees to Louisiana. The new French Regime makes peace and disavows Napoleon, and he makes little fuss. I think this is essentially ASB (if not outright so) but its what I can see.
It's practically useless without New Orleans though.