[Y]ou are correct, I do not mean "pliability/pliancy only in literal surface-curving manner," but more of a "yielding readily" (like the varying aspects of the plan of the Wagner House which is on a sloped site). Perhaps it is uncannily (or even appropriately) ironic that the Venturi and Rauch peeling wall detail yeilds from an actual bending wall.
I (re)read about 75% of Lynn's essay last night, and there one sees "the pliant" more in the sense of literal bending and folding, plus also more in concert with suppleness and smoothness--although here too Gehry's architecture is most often used as example. (I feel my reading last night suffered a bit due to no illustrations accompaning this latest version of the essay.)
[T]he pliancy of the Palace of Ottopia is more a demonstration of the drawing pliancy that "laissez-faire" CAD manipulation allows. Yes, the Danteum is there, but so is Hejduk's Bye House, a bit of Perruzzi's Palazzo Massimo and a little bit of myself. (There are several animations of how the design came together which I'll again upload.) Also, the gemmating Danteum plans allude to Eisenman (Aronoff).
Interestingly, within the studies for the Palace of Ottopia, there are some (pliant CAD) manipulations of Gehry's Wagner House--
--which eventally became House for Otto 4.