You can click on the below link and fill in the appropriate information
https://bitcointalk.org/index.php?action=trust;addflag=67058

You will need to choose if you had an implied or written agreement with him to safeguard/repay your money. If the agreement was implied and not written, you will have to ask theymos to extend the expiration of the flag, which IMO would be appropriate in TFs case.

https://bitcointalk.org/index.php?topic=326879.0 <~~ for inputs scam
https://bitcointalk.org/index.php?topic=4589356.0 <~~ there was a reimbursement thread here. I’m not sure if everyone was substantially repaid or not.