Same. I went to a wedding last year in Mallorca and we had a second stag do a few days before the big day. Found myself wondering around the hills of Palma at around 3am, completely oblivious to how I got there and why. Also without my wallet and phone. My phone pinged up on find my iPhone the next day, it was at a hotel about a mile away and the reception where my phone was said I was out for the count outside their hotel at about midnight.
For all the conspiracies about Jay over the past month, he was probably just off his nut.