No, I'm pretty sure Wil has never mentioned Not!Fey by name. And, Bradford himself said that Fey was dead way back in November.
I loved this episode, and I don't mind the Alex/is plot. Betty is pretty much a soap; at least I've always viewed it as one. But I do want to know what in crackers Alex's motivations could be for this faking of the death, the changing of the sex, the taking over of the company. They've all been talking about him as the golden boy; I wonder what info we're missing.
Also, so much awww for the Daniel and Betty karaoke bonding, stay-out-late watching the city fiesta. They are so cute together, all caring about each other and stuff. And how wonderful that Daniel is rooting for Henry!