The UAW's New Conflict of Interest

Mickey Kaus raises an issue I hadn't thought of with the structure of the auto bailouts:  the unions now have a conflict of interest.  Thanks to the government-sponsored reorganization, the unions now own a sizeable chunk of GM, and I believe an actual majority stake in Chrysler.  This gives them an incentive to cut those companies special deals, while holding Ford to a tougher contract--which is apparently what they're doing.

It seem to me that this is a clear and insurmountable conflict of interest.  Should the UAW be compelled to relinquish its stake in the automakers, or stop representing Ford workers?  I'd say they should.  Not that this has a snowball's chance in hell of actually happening.