I think a point I was trying to make has been missed. As a student pilot (certainly in JAA/EASA-land) an instructor is meant to be supervising any solo flying. It isn't clear by your posts who authorised this particular flight, what the details of that authorisation were and who the supervising instructor was. Furthermore, did the club/school have SOPs and, if so, had you unwittingly broken them?
Of course, as others have said, at some point during your training you need to be competent in flying & landing the aircraft in various configurations.
PS. Don't be worried about obnoxious instructors - it comes with the rating
