This will only end when dozens of Hillary's SDs switch to Obama ...

It seems clear that Hillary is playing a game of vice presidential chicken- using as leverage her legal right to have the convention decide (as an appellate body of the DNC committee meeting) the Florida-Michigan question. It appears that Obama is not inclined to give her the VP spot, so I think the only way out of this will come when dozens of Hillary's SDs approach her in early June and let her know that she should concede or else they will switch to Obama.

It's only at that point- with her own superdelegates leaving her - that it will be too humiliating for Hillary to continue, as much as she might like to. I don't think it will be enough for the uncommitted SDs to break Obama's way. But I'm sure there are a number of Hillary SDs who genuinely have the party's best interests at heart and aren't afraid to switch on behalf of the party. When we start seeing them break in large numbers, that's when it will end.

But it probably has to get a little messy before they feel compelled to do so- so hang tight.

the ex-DNC chair from Indiana ... I heard that Dianne Feinstein
got a satisfactory answer about HRC's route to the nomination, but
perhaps her hesitation earlier this month will return. More un-
decideds moving to Obama is helpful, but you're right that it's
going to take more HRC delegates switching to convince her it's
a lost cause.

I think he is right. The SD's care about their own political hides more than Hillary's--so I can see her losing a number of them after June 4th.