One source is claiming incapacitation, but another source (unverified, but sounding plausible) is claiming that the CVR and FDR show that the F/O was anxious about the heading but that the Captain said he would make a "wider circuit". It would appear that the Captain may have been unaware of the proximity to the hills and the F/O called for a pull-up, but the Captain turned the heading pointer to the left (correct direction) but through more than 180 degrees so the a/c reversed the turn the right.
This heading 'bug' was present on early 737s but was 'softwared' out so the a/c maintained the initial turn direction. Any input from AB pilots on this please?