First, Reg. Z (Truth In Lending) should already apply in most cases unless these loans are over the threshold ($51,800 this year). I think maybe what you're trying to ask is if RESPA (Reg. X) applies??
Secondly, is the additional collateral an assignment of a mortgage or is the officer actually taking a lien on real property or residences, specifically primary residences? Were they taken as an abundance of caution?
I would definitely verify if flood was pulled on all of those "mortgages" too. If not, you might have more questions than answers. How was the collateral secured? Did you do a deed of trust?
I know this is not a complete answer but I don't think I can give you anymore help w/o more information.
I'm sure others will have more feedback for you though.