These seem like very "heavy handed" control inputs. Is the report definitive about no external factor (from loss of some control surface to cargo shift).
Any mention of the CVR ? What was the other pilot doing ?
I am really having an issue with "During this the captain "energetically" (sic) turned the yoke from 10.7 deg right to 53.5 deg left within 1 second" - why would he do that ??