I'v heard of removing the tab, but it's pressed in, and it's not designed to be removed. I played with a removed arm this winter to see what the tab removal was all about. It didn't get removed because after considerable yanking and studying of the way it's installed, it's not designed to be removed.

JCWhitney has the exact wiper removal tool (Lyisle sp) that most professional chassis men have for about $3. I paid more for mine becuse of the racketeering of middlemen providing spealized tools. It's money well spent because it takes more than 3 dollars of effort to sand out a scratch in primer, let alone topcoat.