How can anyone think this was a planned leak? People love a conspiracy theory, but I just don't understand how anyone can think like this when it comes to big, established bands.
Its basic business sense. A leak is bad because you'll lose money from people who will not bother buying it on release day. That loss won't be made up for by publicity.
And if you hadn't noticed, the leak hasn't made the news. If it was planned, it would be on the news and an iTunes release would have been announced already.
Besides, U2's lead-off single is doing well and they're popping up all over the place. If it had bombed (pardon the pun) then maybe they'd do something like suggested. But like I said, it would be useless unless they had a strategy ready to go to get the album out there.