at the moment you cannot make a spiky-eared pichu as pokesav will not support it, so if you get the spiky-eared pichu, load your sav file onto pokesav with the spiky-eared pichu on it, save on pokesav, then reload the sav file onto your game your spiky eared pichu will turn into a normal pichu and until they upgrade pokesav you will never be able to get spiky-eared pichu back unless u redo the event (which is only possible with AR or something else)