If he was being driven by Sabine in circles as much as Jeremy was, then I'd think it'd be understandable, but from the sounds of it, that wasn't the case.
I'm surprised no one has played the conspiracy card and noted that Jeremy writes for the The Sun and he could be influencing certain papers, like The Sun, to dig up all this information. Far fetched, I know, but given how much some people hate Jeremy (*cough*DailyMail*cough*), it's surprising they haven't gone to those lengths yet.
It's plausible but given that he and Evans are still friends, doubtful. Like I said earlier, it's just the press loving a good failure, or trying to fabricate one.
I mean, imagine if this didn't happen and everything went smoothly. You think The Sun would still buy the photos and print a positive "Sneak peak at Top Gear Filming: Evans getting into the swing of things"? No chance.