I haven't listened to the WUWT show yet, but am interested in hearing the letter he sent. Sometimes Clay gets into problems because he isn't really about confrontation - so he told Kim that the tour sounded like a good idea because he figured it wouldn't happen anyway. Kim tried to force things to go her way by announcing the tour as if it were a done deal, and it was in a national publication IIRC, so not insignificant. If she still won't talk to him, it's her loss - she was wrong then and is wrong now. Last I saw her was on a youtube video doing something to do with cooking. It wasn't very good.
I agree that Clay's a good writer. For all that Allison had a big hand in LTS, his voice comes through loud and clear, and I don't mean just in the audio version. I hope this next book is more from his mind because it's interesting to read how he thinks. I also agree that his confidence is higher now since he's penned pieces for Huffington as well as his own blog when he put more time into that.