OK, first I will offer a *hug*, if you will accept one from me. Then, let me see if I have understood this all correctly. Your Master gave you a task to do, which you altered. Then when he was upset over your alteration, you balked at his punishment. Now he has assigned “the biggest test for your willingness to submit to him yet” in your words… and still you balk. Do I have it right?
Perhaps his objective in this original task of his was something you did not see. For example, maybe it was that he wanted a link to this specific site, and a recording from you was the bonus. He gets what he wants and gets to hear his love’s voice as a side perk. I don’t know. The point is you don’t know either. He asked you to do a specific thing and you altered it.
Please do not be upset at me. I do understand how hard and harsh it feels to ‘be dropped’. I am only attempting to give you another view. Perhaps you might consider submitting to him, even if this ends up being the final time. Do exactly as he says, in this. Go vanilla for him, just as he says. Consider it your Grand Finale, if that helps you. I am guessing – a complete guess on my part, mind you – that perhaps if you submit in this, you might regain something lost. I truly hope this is the case, and wish you the best.