If Osensei was unhappy about the training, he obviously would have done something about it. I believe he did have the necessary power to do it, being the founder of aikido and all. However, in his lectures that were so boring for the deshi, he was talking about heaven and earth and the kami and the universe...etc. No one understood a word of what he was saying. That's why they were so eager to go back to practice instead of sitting in seiza for an hour listening to an incomprehensible speech.
Not really, He was seldom there anymore. He was also apparently going to the Kodokan to play with them. It would be interesting to see how often that was. Then he was at Iwama training. The teaching was Kissomaru and Tohei. Tohei then left. What's left was Kissomaru's development with his students. Which looks like a technical syllabus more than anything else.