Glee: I Am Unicorn Spoilers

The next episode of Glee, I Am Unicorn, was released to the press today and spoilers have been floating around twitter all day. The biggest one that fans have been talking about is the fate of Darren Criss' character Blaine. Spoilers:
Blaine is a junior.

As in..younger than Kurt. Okay, I'm sorry but there's just no way. Blaine had to help Kurt cope and deal so he at the very least was the same age, if not older. Kurt's mentor that got all the solos in another school(who is now afraid he won't get any for being younger) is younger than he is? And this same person had a sex talk with an older kid's father? Even though this kid was all set to go to New York with his "older" friend at the end of the year?
This is so obviously the result of a failed spin off and an excuse to keep one of the hotter more popular characters on the show. Where's the continuity Glee? Blaine can still be on the show and still be the age he was meant to be. Ugh. I'm almost insulted.
There were more spoilers from the same person but..I don't care. Just wait for my recap on Tuesday.
Edit: My beautiful friend Amanda just pointed out to me that this apparent 15 year old Blaine wanted to get with the old dude who worked at The Gap. LOL forever.