I wouldn't call him that, myself. Many of the details aren't known. That's the problem. Just who has authority, Constitutionally, to challenge a potentially unqualified winner of a presidential election is another problem.
If there is any politician on the national stage, who is capable of being bullheaded/quixotic enough to pursue this, he's the one.
Maybe calling Paul gutless is extreme.
My understanding is that Berg and another person affiliated with this suit will be at the National Press Club next Monday. These presentations are carried on CSPAN.