There is many kind of peelvply. In the past I was using a peel ply for perfect back surface. Unfortunately when I was trying to take it off it was really difficult. This peel ply there was very smooth on the surface without red lines (like yours)but when you pressure it then is torn in hulf. Now I am using the peel ply with red line from airtech to see them better on the part but when you release it the surface is rough. Unfortunately this peel ply is still difficult to release it from the part. Flow media must be very close to the part to avoid this kind of problems
There is many types of peelply, release coated and not release coated, but also the weave style can make a huge difference for release properties. Check the products section on www.airtech.lu for instance.
Here the problem is that the thick(ish) flow mesh is too strong to get it off (yet too brittle to be able to pull it off). Rolling with a grip vise is a thing you can try.
Next time you would like a perforated film between mesh and peelply. That way you can lift the mesh easily, then being able to pull the peelply. Make sure the perforated film is highly perforated, spec. “P, P1 or MP22” is best.