I think that was tested, and the result was that the armatar goes back to the blank, but the moment you hit the new set again, it will return to the one you chose before.
Spam to 10,000 AP and then get it all deleted(And cross your fingers you don't get banned). Unlock that set, and then...
So unlikely...
I had it for ages~
Yeah...
Here is a great way to get a blank armatar
1. Take a temporary armatar and keep it even after it disappears. 2. Your armatar will appear blank.
The sad thing is, it doesn't work for comments...
Oh, we don't have pictures on comments anymore! So the trick works completely now!! Awesome...