Boy, bit of a long wait! What reason was given for the delay?

Saw VS19 land today, 13/7 on time so it hasnt caused an ongoing mexican wave style delay...

A little more colour.. They kept the pax on the plane for 5 hours, then deplaned and my colleague went back to the CH for 5 hours of food and harcuts. He was lucky and enjoyed it I guess. Plane arrived at 11pm ish so he was in a bit of a mess the following day