I couldn't find any email or phone information from the event page, so this seems like the best way to get this seen by someone who can do something about it.
I went in to demo, gave my silver Kershaw pocketknife to the security guard who took a picture of it and my face. Forgot to pick it up on my way out. If anyone here can put me in contact with someone who was at the event I'd very much appreciate it. The knife was a gift.