Sure. I'll bet you $1,000 that they are still independent on February 26, 2015.
"Snapchat has peaked" or "snapchat is doomed" are each consistent with independence in a lot of cases. "Snapchat can IPO" as well as "undefined" are also.
The only case I can see for "Snapchat in a quick sale" is if there were a strong #2 from FB, Twitter, Google, Microsoft and another of them bought Snapchat as the competitor. As it is, I don't think it's a direct competitor to Twitter/FB core business, so they're not forced to buy it right now.
I agree that US law could be an impediment to building such a thing.