What happend to the undertaker in 2010?

Undertaker is currently out due to injury in real life. On the Smackdown prior to Memorial Day, Undertaker had a match with Rey Mysterio where Mysterio broke Undertaker's nose and face bones in multiple places with a sloppy landing. Recently on his time off, he got married to fiance WWE Diva Michelle McCool. In storyline, WWE has speculated that someone has attacked the Undertaker and put him in a vegetative state making Kane, Undertaker's storylined brother, start looking for revenge stalking and attacking the likes of CM Punk & SES, Big Show, Jack Swagger and Rey Mysterio. Rumor has it that Undertaker will make some sort of surprise appearance at this summer's Summerslam in someway either during or after Mysterio's Heavyweight Championship match against the current World Champ Kane.