Chili,
As you know, you might have inadventently lost track of the guy's movement. I'd be more confident if something similar happens again or if you sense some meaning to the encounter that initially eluded you. Your experience reminds me of a couple of analogous incidents that really inspired me.
An associate of my Dad's is an oil baron in Alberta, Canada and a personal friend of the Premier of the province. This man was an Amazing Randi type debunker. He loved to ridicule simple Christians. One day, after a recent debating triumph, he was driving to a sky scraper in downtown Edmonton for a business meeting. He was gloating over his recent rhetorical triumph; so he decided to issue God this challenge: "OK God, if you exist, let someone approach me just as I enter the outside doorway and say, "Alms, please." Pandhandlers were virtually unknown in that part of town and the quaint expression "Alms please" seemed an unlikely phrase in these modern times.
He forgot about the challenge as he parked and walked to the building. Just as he arrived at the front doorway, a man oddly dressed as a Scotsman in a kilt suddenly appeared out of nowhere and confronted him: "Alms please!" he said. My Dad's associate had quickly brushed by him before the significance of this encounter dawned on him. Within 5 seconds, he wheeled around and rushed through the door. The panhandler had vanished. My Dad's friend was certain he had no time to rush out of sight. That's how my Dad's friend became a committed Christian.
Perhaps the most famous example of this sort was one of St. Francis's life-changing experiences. Francis was a very materialistic son of a wealthy cloth merchant. He was the equivalent of a rock star in his day and loved to picked up his friends' tabs in the pubs they frequented. He abhored ugliness of any sort. One day, he received this psychic communication: "Prefer bitterness to sweetness if you want to know me." He had no idea what it meant, but he had recently been developing an interest in spirituality; so he mulled this message over.
Shortly, thereafter, Francis was riding in the countryside, when he saw a leper begging by the roadside. Francis felt revulsion and was about to pass by when he thought better of it. He turned around, dismounted, embraced, the leper, and kissed him on his pu-ssy leprous cheek.
Wave on wave of liguid love surged through Francis's being. He remounted his horse and looked back. The leper had vanished! It was then that Francis realized that Christ had appeared to him in disguise as a leper. From then on, whenever Francis encountered the sick and the needy, he viewed that person as Christ's Spirit approaching him in disguise. So this encounter with the leper proved a key stepping stone in the young materialist's pilgrimage towards a saintly life.
Maybe you did encounter a spirit! Keep us posted if this phenomenon recurs.
Don
P.S. I posted these accounts once before and
"p-u-s-s-y" got censored as "girlthingy." So this time Iwised up and inserted a censor-beating hyphen!