I know pussified 'lame, weak, effeminate', whatever the historical connection to pusillanimous may be. But the participle makes a verb to pussify a necessary step from point A to point B. To make it mean 'somebody who has had this done to them', you need the em-, I guess. From there, I guess, it must be just one step to his noun.
What a tangled derivational web we weave:
pussy (fig.) > pussify > empussify > empussified, empussification.