Confirmation bias?
I think you're reading what you want to see into the report. To quote your quote of the report:
Had Dr. Mann's conduct of his research been outside the range of accepted practices, it would have been impossible for him to receive so many awards and recognitions, which typically involve intense scrutiny from scientists who may or may not agree with his scientific conclusions...
Mann has the respect of his peers because his findings have held up well under scrutiny. He has done pioneering work in the field of paleoclimatology. He's been investigated several times by different entities and has never been found to have done anything substantially wrong.
What makes you think Hansen is abandoning climate modeling as a valid investigative tool? It's been years since he has been directly involved in maintaining the GISS Model E code but he's still the head of the GISS and so presumably has major influence on what is done with it. Models of any kind are just tools to measure how well our scientific understanding of a topic fits the real world. Hansen's original model from the 1980's and others developed since then have held up well compared to real world observations. Is that another case of you reading what you want into it?
