I replaced 3 items recently, one of which was the rear VW emblem. I found a credit card difficult to use but a razor blade gets in there nicely. After getting it popped up a little bit, I made the mistake of switching to a screwdriver, which scratched some of the car's paint around the edge of the circle. I got the original chrome emblem off and noticed that one snap looked broken although it didn't seem like anything broke when I was removing it.
Here's the back of the original and you can see one tab is broken with a greyish colored inside:
Here's the back of the car. Harder to see in this picture but it didn't look like the other half of the tab was in there and also did not look like the hole was even deep enough for the size tab on my newly supplied emblem. The hole for the tab looks like it is intact and not filled with a broken piece (the inside of the hole is black and not grey like the inside of the broken snap:
Here are the old and new emblems side by side:
So, I decided to go ahead and clip the same snap down to size and it seemed to re-attach just fine (maybe the chrome one had been snipped in the same way at some point.. I bought the car used):
With that out of the way, I moved onto inserting white vinyl inserts into the spaces of that logo (PITA), then did the GTI letters in black (the easiest part of this whole project), and finally on to removing the grill to replace that logo (also a PITA).