Could Clark come back?

Everyone thought Wes Clark's VP chances were squadoosh after his comments about McCain's military service. But here's Nate Silver backing him, citing the Georgia conflict, which, in theory, helps McCain be refocusing the debate on foreign policy as a reason to pick a general. But why not avoid the awkwardness by picking a more obscure military man who didn't put his foot in his mouth? Eric Shinseki, perhaps? Or James Jones?