Though their #1 ranking may be on a technicality, the Washington Mystics snatched the top spot in the Eastern Conference with a thrilling win over the New York Liberty Friday night. In tense fashion, the win wasn’t decisive. The Mystics leaked away a 12-point lead earlier in the game until New York moved ahead 73-74 in the ending minutes. But a final layup by Lindsey Harding with 8.8 seconds left, in a less than…