There was also a young man there of perhaps 20, who's eyes never left the floor. From his body posture and facial expression I could see that he was in some pain. I felt intuitively that he was one of us, but I let him have his space. Perhaps the door was opened a small crack toward healing just by his being there.

You are likely correct. Nice work that you're doing (and for the right reasons).
Blissfully retired after 35 years treating sexual abuse