Ugh. After the revelation and subsequent actions taken in last night's mid-season finale (not saying as they're massive spoilers), it's made all of the episodes past #2 so far a waste of time and energy. We already knew that Shane was/is a flaming douchebag--we didn't need six episodes for him to delve into complete asshattery, when it was entirely believable he would do so after one.
And AMC (and other cable outlets), seriously--enough with putting shows on hiatus, folks--pretty soon, we'll have quarter-season finales (like what ScFy did to Eureka...until they decided to kill their second best show, ratings-wise, because they didn't want to pay.)
Also, if you've read the graphic novel compilations or comic books this series is based on, it's easy to see what kind of arc they're taking with Shane and who will ultimately do him in. The question is why they haven't done it already, as his character is a drain on the series as a whole.