My guess is that they're simply preparing for the (uneventful) end of 2014. That's sure to leave many doubting. I'm sure that there are a good number of people (I myself did this at one point) that have doubts and said they'd give it till 2014 (on the rough estimation that a generation could last no longer than 100 years) and if nothing has happened they'll reevaluate.
My theory, though, is that articles like this that stress how to treat those who might be appostates in the congregation aren't for the fully indoctrinated believers. These articles are to send a message to the doubters that they'd better keep quiet and stay in line or they'd effectively be shunned. With a system like that, you could have a congregation where everyone has the same doubts but they're all too afraid to say anything.