3.

It was not my intention to make such a sudden and precipitous departure, but I promise it was for a good cause.  Think of it as if I'd had to suddenly leave to prevent Godzilla from destroying Tokyo, or an event of similar magnitude.  The only people who I had time to explain to were my bosses...

In any case, crisis averted.  Multiple crises, for that matter, as this time I was prepared to make this trip and did not mysteriously appear in town without enough money to leave, but instead came by the remarkably discreet train, with bags packed and prepared to make an extended visit.