A critical evidential key to this discussion (potential release agent & adhesion issue) is that this wooden form in the spillway should be completely straight (or flat with no bend). Why? The "walkway platform" built into all of the forms to date are on the straight vertical wall section of the forms. The outside "angled buttress" forms have just a safety fence, not a walkway platform. The form in this "discussion" laying in the spillway has a "walkway platform" attached to it. This infers that this form is for the inner wall where workers are "out of the way" of the concrete pumper hoses. The concrete pours have been done from outside of the spillway concrete pump trucks. So it would make sense to have these walkways on the other side.
Upward view reveals the taper of the sidewall design. Taper forms an "angled buttress" to the sidewall outer structure. The taper starts near the upper section of the sidewall. A "Walkway platform", for construction workers to guide the concrete pump hoses, are on the inner "straight" sidewall.
