Actually he did go home with the pictures he took. Deleting the photos doesn't get rid of them. I've recovered a full 2 GB SD card for a friend that accidentally deleted all of her pics. Software is available to recover deleted files and it's just takes a couple clicks to get them back. You did good though. Maybe he'll think twice before doing that again knowing he was made so easily!
USAF Retired, CATM, SC CWP, NH NR CWP, NRA Benefactor
To preserve liberty, it is essential that the whole body of people always possess arms, and be taught alike, especially when young, how to use them... -- Richard Henry Lee, 1787