I appreciate your comments and I am glad it helped you out.
In the picture illustrated, the DB is obviously playing off-man. The main crux of my post was to show how leverages can be effective in man press and blitz situations.
I do not advocate calling a base man coverage which has your DB's in off coverage. Coach already has a thread going on showing problems with those plays, so there is no need to further address that here.
The only time I play off-man coverage is in certain situations, such as 3rd & long, when I am sending heat and playing inside and over leverage. In that instance, I will happily give up a quick slant and force the offense off the field. Against a burner receiver, I would not play off at all, nor would I play off backed up near the endzone.... Peace.