C pilar removal ?

[brad131a4]

Working on removing the interior of my car and seem to have run into a issue.
There is something not wanting to come apart on the top of the C pillar cover right at the top as it starts to bend done from above the door down the pillar.
Almost looks like there might be a screw on a tab under the headliner? Any idea's of what I'm running into.
I've looked at all the thread's in this section waiting to be able to post and haven't come across anyone else having this issue.

Thank you.