Is Seth Green's Grey's Anatomy gig still happening, or has it been scrapped due to the strike?

His two-episode stint has already been shot and will air. Unfortunately, the same can't be said for Joshua Jackson's arc, which has been delayed indefinitely. Bummer, too, since I just found out which Seattle Grace doc he was going to be paired with, and it's pretty much the last person I would've suspected. And trust me, that's a good thing. I probably shouldn't tell you who it is since the script isn't even written yet and, therefore is subject to change…. Oh, what the hell (Major spoiler alert): It's Cristina! That's right, Yang was/is supposed to rebound with Pacey!
Is Callie really gone on Grey's Anatomy? I know a lot of people don't like Sara Ramirez's character, but she is absolutely one of my favorite parts of the show!

Sara's not going anywhere