Befriend him, take him to the pub one Friday night, get him good and soaked, discreetly hit “rec”, and just let him talk.
Sadly I think once burnt twice shy (is that the phrase?). That "bottle gate" stuff probably made him even more distrustful of the outside world. The way Cedars went after him over that incident was out of order, in my opinion. So he likes a decent scotch...so what? (Cheap whiskey is 😫) Might have been for a party...50th wedding anniversary? Super hypocritical of Cedars of all people to condemn him for that.
Personally I think we'd get more headway down the old Lumberton Dog and Duck with a bottle of Jameson..... for Mrs. Morrison 😉