Is Shas playing both sides against the middle?

In this government, at least up to now, Shas has been behaving like a Right wing party. For example, it was Housing Minister Ariel Atias (pictured) who disclosed that there was a de facto building freeze in effect eight months before the freeze actually went into effect. And in the current discussion of extending the 'settlement freeze,' until now, Shas has said that its ministers would not vote