Originally Posted by
j2simpso
....
But can UA do anything about it for this traveller? Can they give them a new password (i.e. PNR) and invalidate the prior one? ....
UA can do a few things It has been reported you can call and request a codeword for a particular reservating -- restricting access to live agents who will request the codeword before any changes.
Also, I beleive a supervisor can move the itin to a new PNR.