It looks like a retrosig incision to me. My doctor described the location of a translab as being two finger widths behind the ear. (I'm sitting here measuring mine with my fingers together right behind my ear and sure enough that's exactly where it is.) Most of the translabs somewhat follow the curve of the ear starting at the top of the ear and curving downward to the base of the ear. Surgeons may vary the angle somewhat, but a translab with normal anatomy should be fairly close to the back of the ear and hairline.
Rob, I believe you are right that they fold the ear forward to get to the tumor with a translab.
I always ask my doctor for a copy of my operative report, the pathology report and the discharge summary to give me a better idea of what went on and remind myself why my recovery has not happened overnight. It will list the approach on the report.