I'll say right up top: I known nothing about this beyond what's been reported, and I have a possibly unhealthy bias in favor of believing that Nancy Pelosi knows what she's doing (a bias developed, I should say, only from watching her succeed on the House floor time after time).
That said: my interpretation of yesterday's highly unusual defections on the vote for Speaker is that they indicate only a decision by Democrats -- and probably more or less sanctioned by the new Minority Leader -- to spin themselves as local heroes, not captives of Washington. They don't, I'm thinking, indicate any dissatisfaction with Pelosi. If there's one thing that Pelosi has always been good at, it's allowing her caucus to duck tough votes when it didn't matter, but always coming up with the votes when she needs them. I believe, and I'd like to think, that she cares more about the (secret) vote that mattered back in November to ensure she would be Minority Leader, than the public vote yesterday that was just for show.
I'm still convinced that she's very solidly supported by House Democrats. Of course, the other way of looking at it is that this is just one in what will be a long series of votes in which it really doesn't matter what the House Democrats do -- and that the job of Minority Leader in the U.S. House of Representatives is pretty useless, even with divided government.