Backups?
So he disabled the backups and waited 6 days before deleting the data?
I am assuming that rather than disabling the backups he actually modified them to exclude the important data so that the tapes would then get overwritten...
My point?
A company holding medical records for 17 health centers seems to have only had a 5 tape rotation which was being overwritten the next week! Why on earth didn't they have end of week and end of month tapes?!?