Disney shares are close to doing something they haven't done in more than three months.It's been more than three months since shares of Walt Disney (DIS 0.36%) closed in the double digits. "Can Disney stock stay above $100 this time?" I wondered then. So far, so buoyant, but with the media giant's shares drifting back to the century mark, it's a matter worth revisiting.If Disney buckles below$100 again, is it a buying opportunity or a red flag? The stock is still beating the market this year with its 14% g ...