Why Luhya leaders need ODM more than it needs them

The decision by a section of Luhya leaders to say that they can no longer be bullied by the Orange Democratic Movement (ODM) is laudable. Furthermore their assertion that Luhya nation is united has some element of truth. However there are a number of issues of great concern.

First, why have they been comfortable in ODM all this while?  Did they just realize that now they are in a big mess? Could it be that there are dark forces which are compelling them to take such a move? All the same none of the leaders have even talked to their constituents over the matter.