I feel about the same way. I think someone from the oxfest or some guy not havin a good day took it cause he couldn't stand seeing other people have so much fun. That said he did parade around in my armor the rest of the day and I was more shaken up from the firsthand accounts of having seen this dude in my armor pawning himself off as me having let him use my armor instead of him as he actually did: Stealing it.
Thats kinda what I think happened. Not just cuz I'd liek to think most attendees are better then doing something like that.
All we can do is keep an eye open, also might check ebay or other cosplay selling site, just in case some one trys to sell it, (I have heard about people finding stolen stuff online) Even if the guy pawns and the store buys it if its found (I think) it has to be returned, this is why the police report is important to have.
Also Hi, I think we met at con I was at the VIP reg booth, I think at one point my brother and I reminded you to drink water whenever you can cuz we were next to a giant fancy water dispencer, if you had the big mac patch
I was just telling my brother and he said---- well can't say exactly on a public forum but we both very sorry that happened