I just found out why the 'supervisor' came by and told your teacher he was 'teaching you too fast'.
This is part of the sales technique taught to all Fred Astaire 'teachers'. It is a classic good/cop/bad/cop situation, and it is part of the 'procedure' taught in sales classes at Astaire since the 60s.
After the 'teacher' is 'reprimanded' the 'teacher' tells the student that he will talk to the supervisor. He will then come back to you and tell you that he 'went to bat' for you, since you are such an advanced student. he will then a. sell you more lessons (an 'advanced' package) so you can 'continue' the advanced training OR b. tell you that his supervisor will give you two (!) an 'assignment' and based upon the results of that assignment, decide wheter you will be 'allowed' to advance.
It is a typical chain sales technique. It is also very thoroughly documented in the sales manuals of Fred Astaire Dance Studios.
The folks who replied to the origional question (myself included) did not look at this any other way than as if it was a real situation. We commonly forget that scams and sales pitches are based upon just that - the ;mark' (in this case the student) will tend to see things based upon THEIR perceptions, not the truth.
Remember, the FIRST part of the sales technique at FADS is to 'make a friend' of your student.