Simply google "divorce statistics" and "divorce child custody men" to maybe understand where some men might be coming from.

Now that I am a single father with joint custody to my 2 children I have been bit by the REI bug really bad.

Have you considered a checkbook IRA instead of custodial? 

Then when I told them I could just use my initial they relented.I work for a custodial bank and the clients are very private.

Only two times I rented to new divorcees (single mom/ dad with custody of teenage children).

The fella upstairs is completely drunk most of the time and on this particular night was a custody exchange with his ex and their kids .

In most cases the female will keep primary custody of the kid, which can result in the male being the one to move if they were to bicker again.  

I believe Provo’s ordinance reads (Provo Code 14.06:)"“Family,” unless otherwise expressly provided in this Title means:(a) One (1) individual living alone; or(b) One (1), but not more than one (1) at the same time, of the following groups of individuals described in subsections (i), (ii), or (iii) who together occupy a one-family dwelling unit as one (1) nonprofit housekeeping unit and who share common living, sleeping, cooking and eating facilities:(i) A head of household and:(A) All persons related to the head of household as a parent, child, grandparent, grandchild, brother, sister, uncle, aunt, nephew, niece, great-grandparent or great-grandchild by blood, marriage, adoption, guardianship, or any other duly authorized custodial relationship; and(B) Not more than two (2) additional related or unrelated persons, including but not limited to, personal care or personal service providers; or(ii) In R1 zones located within neighborhood areas described in Subsection (c) of the definition of “baching singles” in this Section, two (2) related or unrelated individuals and any children of either individual, if any; or(iii) In all other zones, three (3) related or unrelated individuals and any children of either individual, if any."

Does he have custody?  

If he was going through a divorce, his ex could have accused him of something to get custody of the kids.