I tend to gravitate towards thinking that willing evil for its own sake "as such," is impossible for reasons of the nature of practical reasoning/intellection. I can accept that there is lying-for-the-sake-of-lying, then, but not lying-for-the-sake-of-lying-being-wrong, say. However, as I also find the encoding/exemplifying distinction to be helpful in working through my theory of predication, I wonder: is there enough of a difference between willing that a contingently abstract object would encode for evil-in-itself, and willing that a concrete object (even an action-as-an-object) would exemplify this, that this difference would mark out a difference in the possibility of willing evil-in-itself? As if, that is, there is something less diabolical (in a pseudo-Kantian sense at least) about encoding evil, compared to exemplifying it?
I haven't seen any clear applications of Zalta's metaphysics to metaethics, in the literature, nor even a cash-out of being-contingently-abstract that has to do with contingent decisions made "using free will," so I am unsure about finding material to cite in an answer to this question. If no technical application of Zalta's theory will be forthcoming on this score, I am willing to delete this question for being unanswerable besides by rabid speculation, but for the time being I will hold out hope that either some obscure reference is available that addresses part of this question, or that someone versed in Zalta's theory of abstract objects might know how to apply it, here.