Like some on some theories here, if the "He is mar/man" was written by Jared Renfrew why didn't he just put the name of RJ ?
This leaves 2 options:
1- The hooker was describing the man she saw
2- RJ written that himself
if (1) was true, we can't really get any useful info out of it.
if (2) was true, it maybe another anagram. I tried rearranging the letters into "I am Hesr/Hens"
on the CBS suspect pool, there's this detective "Don Henderson" can also be rearranged to "Don Red Henson"
I know this is very thin and that guy may not fit the profile of RJ but I just wanted to think out loud.