Here
http://files.me.com/jdj88/tnmi0f, in paragraph on page 2, you can read about Konstance Knox. It's not possible to copy and past, unfortunately. It's not the WPI's fault she did what she did. Ok, this is the WPI's version of what happened, but i'm rather confident it's correct, because you usually don't say something like that publicly if it's not true. That would most probably constitute a criminal offense. What apparently happened is not clean, sorry, and it's not the fault of the person who points it out. Maybe they should have made this public even earlier and also taken stronger measures, i don't know. They are certainly not in an easy situation (the WPI).
Brigitte Huber, as far as i know, was a presenter at the 2010 Invest in ME conference. She was asked not to talk about her negative study (this is what i heard) and guess what she did at the conference?
These things have happened. And there might be more we don't know about. It would be great if the WPI could fight all of this off and at the same time not make any mistakes, always stay "in the scientific arena", as you say. But it's certainly not an easy job.
It might also be interesting to know who writes the Wikipedia entries in question. I think Dr. Snyderman has some interesting data from treating his own illness with ARVs and also (not 100% sure) i think he was part of the recent study where they developped XMRV producing cell lines. So certainly there are also positive contributions to the WPI's cause from his side.
Btw, what you say about Kristin Loomis and her daughters could also be said about Annette Whittemore. Would she pursue XMRV if that was not the most promising avenue? Why would she fight so hard for flawed research?
What about Stoye who "lost" Dr. Enlander's samples, for example? There's a number of such things that happened. One should not only look at the WPI, there are plenty of question marks on the other side as well.