My guess is yes. In Valis quite a bit is made of the play on words with Phillip meaning horse-lover. So Phillip K Dick = Horsedick (though that's not the sense it's used in Valis).
Yes, have corrected! Yeah, I just thought PKD liked that Horselover imagery so much, that Greek version of the name. (Philippos, lit. "horse-loving" or "fond of horses"). Just thought this might have been a bit of a nod towards that! Guess it's a bit of a stretch.
Horsedick, is that a call/ref to VALIS? I.e. Horselover?