Tim, that looks like a karate-type form that Hiroo Sensei must have created. It seems to have elements similar to sanchin and tensho, but, obviously, is neither of those. This was not included in Minoru Sensei's yoseikan. His katas (except happo ken) all resembled traditional judo and jujutsu forms. Since Hiroo is a master of wado ryu (and, I think, some other karate styles), his approach seems much more strongly influenced by karate and this form looks to me like something he developed, himself.
As to whether it's typical solo training for yoseikan budo, I'd have to say, from my encounters with Hiroo Sensei's system, it looks pretty typical.
Hope that helps.
Best to you.