Timothy Walters Kleinert
Not necessarily. Someone with more knowledge can correct me, but starting with these three techniques seems bigger than just the Hiden Mokuroku. For example, Ueshiba begins both the "Budo Renshu" book and the 1935 "Budo" film with these three techniques (suwari-waza, though).
Is Howard Popkins around to shed some light on all this?
It seems to me that If you really wanted to know, you could just email the dojo. www.aikifremont.com
and ask the Daito-ryu instructor, his name was Shawn Douglass.