trim removal to get at wiper linkage & motor 2000 jetta

My wiper began to slow down then eventually stopped. I lubbed the
linkage then they began to move slowly again. I'm trying to get at
the linkage I removed the wiper arms but can't get the plastic trim
off. I did take the environmental filter out but it seems like the
trim is siliconed to the windshield??

Thanks for any help

dave

p.s. as usual it's raining