Airbag Trim Removal
The A-pillar and C-pillar trims on .:R32's with Curtain Airbags are held in place with a specially designed two-piece clip to prevent the trims flying off if an airbag is deployed.
VW advise to replace these clips whenever you remove the trim pieces. The part of the clip that remains in the metal pillar is destroyed during the removal process.
There is a special VW Tool number T10078 available to aid the removal of the trim pieces.
Essentially you need to hook the end of the installed clip through the hole in the end of the tool.