Gephard Threatening Labor?

Here's an odd story from the Washington Post. Two labor leaders are accusing a long-time Gephard aide of threatening to lobby for reversal of the Missouri executive order that allowed state workers collective bargaining rights. Those two labor leaders respectively head the SEIU and the AFSCME, who represent about three million state and municipal employees nationwide.

Those are also the two largest unions to endorse Howard Dean, which was seen as a big blow to the Gephard campaign. So what's going on here? Are Gephard's people playing politics, or are the union leaders?