Its a little hard to ask players to look for staff all the time when im one of the only 2 active staff. Most of the time im busy configurating stuff and fixing stuff to be there for the players. Also with economy, using vault, you can track transactions. If theres an unusual degree of transactions then thats the culprit. Moreover, the recipe in the vid isnt really valid with gregtech overwriting the crap. As long as you dont have stuff in your shop that have an easily obtainable recipe then you are fine.
EDIT: Isnt there supposed to be a final patch for Ultimate 1.4.7? Could you bring this up to slow and request that he include the bugfix?