A few thoughts
Idle speculation I guess but based on information availible
Chief pilot + newbie = Possible CRM issue
Aircraft came to rest directly opposite tower, who having been alerted to the go around would probably be watching, so maybe we should take seriously the eyewitness account of the "aircraft became unbalanced" and maybe interpret this as a stall while attempting a go around (hard bounce on runway giving to much nose up?). The accident site does not show too much evidence of forward motion or ground contact (skid)