So we finally decided to get out vinyl liner replaced. I took the opportunity to replace all the flex pipe with 2 inch PVC. The pool is old. Originally built in the ~70s. Refreshed some time in the 90s or early 2000s with the current flex pipe. Its a really bad setup with 1 skimmer, 1 suction and 1 return. The skimmer barely had any flow and the backpressure was horrible.
I knew it would be a production but I wasn't expecting this.
I thought I felt a threaded fitting so I dug under the concrete and slapped a pipe wrench on and literally nothing moved. Today the pool was drained enough to get the face plate off. This is what I saw.
It looks like Gasket -> Metal -> Gasket -> Liner -> Faceplate. I'm not seeing the bulkhead fitting that should be there.
Second Angle:
Back Side:
So my question is:
Has anyone seen this before? Any ideas on getting it off?
My thought is to Dremel with a cut wheel around the fitting as close to the metal as possible without damaging it. Then sand / shave off whatever leftovers remain .
I knew it would be a production but I wasn't expecting this.
I thought I felt a threaded fitting so I dug under the concrete and slapped a pipe wrench on and literally nothing moved. Today the pool was drained enough to get the face plate off. This is what I saw.

It looks like Gasket -> Metal -> Gasket -> Liner -> Faceplate. I'm not seeing the bulkhead fitting that should be there.
Second Angle:

Back Side:

So my question is:
Has anyone seen this before? Any ideas on getting it off?
My thought is to Dremel with a cut wheel around the fitting as close to the metal as possible without damaging it. Then sand / shave off whatever leftovers remain .