Nah... I don't know. It would be a weird coincidence for the RE universe to have two different Ethans whose last names both happen to start with a W, but that alone can hardly count as proof that they are in fact the same person. And if they are, it pretty much contradicts the way they've been setting up the character up until now. While the connection is technically possible (as I don't recall Capcom ever stating that he can't be a former employee, only that he's not a combat veteran like Chris or Leon), wouldn't someone who has a past with Umbrella, and even a level 9 security clearance, be a little more perceptive when it comes to viruses, parasites and BOWs? Ethan, at least judging by what we've seen so far, has no clue what's going on. Mia on the other hand seems to know quite a lot that she hasn't been sharing (remember her line: "There's so much you need to know!"), so if anything, she's the one we should be suspecting.