A few days later this topic was discussed in this forum
(sorry but it's in spanish but there's a picture of the captain). Basically a guy there ran up with this story and shared it in the forum. It turned out that 2 other guys knew Capt. Ruben Ocana (the pilot flying that a/c that day) personally and actually one of them is about to post more information and some newspaper extracts from the time shared by the pilot himself.
The aircraft was flying Emilio Azcarraga-Milmo (owner of Televisa, Mexico's largest TV network, media tycoon and an extremely powerful man until his death). After those missed approachs in Shannon they were diverted to Cork. The ATC asked the pilot whether they were able to see "a railway track". On affirmative answer, they were advised to follow it up to a road intersection and from there they should be able to see Mallow (and the racecourse). They landed safely and the rest is history. It's said that the crew actually were the judges on the pageant contest which took place in Mallow over those days. Afterwards Capt. Ocana was asked permission so a local travel agency changed its name to "Ocana Travel".
By that time, Capt. Ocana had already retired from Aeromexico (statutory retirement because he was over 60) and jumped to a short career flying this bizjet. He was praised in Helice (mexican pilot union's magazine) and he even was praised by Gulfstream.
I don't think he would have been stripped off his license (otherwise the union would have had defended a fellow retired captain's rights and this businessman would have defended him as well).
He's now in his mid-80s. Keep looking at that forum because more pictures will be posted soon (shared by Capt. Ocana himself).
Greetings from a mexican in London.