The W Austin was abruptly evacuated and closed today as glass fell to street for the third time in three weeks. The glass fell from the South side of the building just one day after three panels dropped to the street. Two weeks ago a pair of panels feel to the pool area while guests were present.Luckily, nobody has been injured in the incident. The developers have already announced plans to replace almost 1,000 glass panels on the building's balconies.Now, the sidewalk is closed and guarded as crews clean shards of glass from the perimeter of . . .