Ah, yes some important details I forgot to mention.

When I preform the twist off method, I make sure to apply firm downward force as well as twist.

my downward pressure i am sure helps secure the pad reasonably.

Also you should have a NON slip ESD safe surface to work on.

Its hard to work on a Logic board with it slipping all over the formica/glass on your desk.

Sorry for leaving out these details.