There's also the fact that the fat Humpty Dumpty gave them details about Walt's money and the return of the rental car, etc, tbh..
Take that + Jesse's knowledge of Walt and his tendencies, and it's a believable reaction from Walt IMO..
I don't defend everything the great shows try to convey as realistic, tbh, but I didn't have a problem with any of this episode's events..tbh, if I had to choose one scene from this season that suffered from lack of realism, it's when Jesse realized his drugs were swiped by Huell(sp?) and made the Walt-Saul-Brock connection in a matter of seconds, tbh..
I let it slide, though, because like I said earlier, the elite shows receive leeway..