No, the explosion was the next street over from the ATT building, with a set of large buildings in between the 2. Only the front fascia of the between buildings were damaged. None came down. It could not possibly have done any harm to the ATT building at all.

The explosion was not in front of the ATT building. It was a the next street over, with a row of large buildings between it and the ATT building. The explosion only damaged the fronts of the buildings, and none came down. It couldn't have damaged the ATT building at all.