Yes. I think it is possible to become hung up on the names of aikido techniques. You know, "Sensei called this technique X, therefore the technique is X."
This is fine for a particular dojo, or organization centered around the 'Sensei', but the aikido world is far too diverse for such names to apply universally. The Founder himself rarely used names, apart from Ikkajo, nikajo, sankajo (= Number 1, Number 2, Number 3...).
Calling the technique initially described shiho-nage oyou is not illuminating for me, since the only point of comparison is going under uke's arm and there are many non-shiho nage waza where tori does this. Perhaps Nyumonsha should ask his own teacher and let us know...
Best regards to all,
Peter Goldsbury,
Forum Administrator,
Hiroshima, Japan