Re: 2-21-11...looks like it may have been spoiled (that didn't take long!) Unfortunately the site that "leaked" it is down due to capacity problems so I couldn't take a look for myself:
However, even if this is true...
At this point though it's just fantasy booking taking over, so I don't really have any bold predictions to make.
"WWE may have given away the identity of the mystery person in the 2-21-11 video, as the Save Mart Center website lists "The Return of The Undertaker" for the Feb. 21 edition of Raw. You can view the video at SaveMartCenter.com."
However, even if this is true...
At least theoretically, if Sting IS coming in, that still could be a video for him. They could have them show up on the same night.
At this point though it's just fantasy booking taking over, so I don't really have any bold predictions to make.