I don't believe this nonsense. He is being kept alive by a respirator, and has no consciousness.
The same bullcrap was reported by his delusional son in 2007, look:
http://www.nytimes.com/2007/04/13/world/middleeast/13sharon.htmlJERUSALEM, April 12 — The medical condition of former Prime Minister Ariel Sharon of Israel has improved very slightly, a television report on Thursday quoted family members as saying.
Mr. Sharon, 79, suffered a brain hemorrhage on Jan. 4, 2006, while he was prime minister, and lost consciousness. He is in a long-term care facility near Tel Aviv, where his doctors have said he remains comatose. They do not expect him to recover.
The report on Israel’s Channel 10 news quoted Mr. Sharon’s son Omri as saying that he was able to respond to various questions with a slight tightening of his hand.
“Father follows things with his eyes, he watches television, mainly National Geographic and other nature programs,” Channel 10 quoted Omri Sharon as saying.
“He responds not only with his eyes, but with a firming of his hand.”
A spokeswoman for the hospital in which Ariel Sharon is being treated declined to comment on his condition.
Probably the doctor who said this nonsense idolizes sharon and wants to believe he's going to miraculously come back and save him.