Being as I'm the one that told you it was okay to hang the tail out some... I guess I should be the one to tell you that you do need to back off. Oversteering around that circle was natural for a lot of the RWD cars, and spinning there was not uncommon. Not a huge deal. Trying to "combo" the circle with the S-turn that follows it, however, is completely NOT autocross, and you screwed that up more times than you got it right, spinning at least twice there, and at least once in the circle.
There's a fuzzy line in there somewhere between what's acceptable and what's not... you were way beyond it.
In short: It's not drift practice, it's autocross.
Whether you thought you disrupted the event or not... you did. Because you were spinning out frequently enough that the starter had to wait for you to finish playing before he could start the next car. It only adds up to 10-15 seconds per run, but if everyone did it, that would be an hour added to our day, or 2 less runs for everybody. Obviously, we don't want everyone to do that and screw up the works, which is why we're calling you out.