I understand the rationale for excluding this activity from the JAR PPL(A) syllabus is that spin avoidance is taught so the student is taught how to recognise the incipient spin signs and recover to fully controlled flight prior to the spin developing.
As to the wisdom of this I would not offer a comment..........
Suffice it to say that I specifically asked my instructor to include a lesson on spinning and spin recovery during my PPL training and I am very glad I did. I would not want to undertake this manoeuvre intentionally without a good instructor of a good aerobatic pilot in the RH seat!
I have an aerobatics course on my list of things to do and so will explore this part of the envelope later on.
Andy