One of my personal insights into training (which many disagree with me on) concerns the following of a particular individual instead of what that individual stood for. The vast majority of karate practitioners today pay homage to an organization’s leader as if to deify them.
The truth of the matter is, in the “golden age” of karate, teachers commonly trained with each other and exchanged ideas on a regular basis. Of course, they did have a main instructor, but they did not limit themselves by shackling themselves to a single instructor. (I take pride in being able to say that, historically, karate was the first mixed martial art.)
After all, one teacher can only explain things in a certain number of ways. If none of those ways work ideally for you, you are missing out. Anyone who knows me personally can tell you that many of my favorite examples for certain techniques come from outside sources. Though we are an IOGKF school, we regularly practice techniques from Jeff Speakman’s Kenpo 5.0, Judo, Ju-jutsu, as well as other sources.
As an IOGKF school, our “leader” is Morio Higaonna. Higaonna Sensei is by far one of the most skilled practitioners of karate (regardless of style), as can be attested to by many senior instructors on Okinawa. Nevertheless, I find Shinyu Gushi of Pangainoon to be extremely skilled as well. His performance of the open-handed Sanchin rivals that of any practitioner half his age! YouTube footage of Kingai-ryu as practiced by the late Shinpo Matayoshi also astounds me. Both of these men have unquestionably affected the way that I practice.
On Okinawa, it was not uncommon for instructors to personally introduce their students to other instructors so that the student may become that much more skilled.
Changing direction a bit, if I personally felt that the essence of my training was lacking due to the leader of my organization (which I don’t), or that other aspects of the style were being manipulated for personal gain, I would leave that organization and continue training on my own, perhaps even under a different instructor.
Anyway, moral of the story: don’t limit yourself by following only a teacher, follow the teaching. Training is what really counts in the end anyway.