Everybody agreed on that while Mariano was still in the tower. The media stated that they had received erroneous reports that he had threatened to jump. An ambulance was on hand just in case Mariano did decide to jump, and made it through the glass and metal encasing the observation deck. Another Doper pointed out that Mariano has concealed weapon permit. So, there was a chance he’d gone into the tower to shoot himself . (Later, Mariano’s staff said he’d been unarmed at the time)
My theory is-
I suspect based on Mariano’s speech, and body language during an interview earlier in the day, and his posture and body language while being lead through Suburban station, he was under the influence of drugs and/or alcohol.
Upset over the indictment, Mariano drank and/or took something before the first interview. Later, feeling melancholy, he climbed the tower so he could be alone with a great view while ingesting more mind altering substance. By the time people began to worry where Mariano was, he’d reached near incoherence. This lead people to worry he was suicidal. After he’d sobered up a bit, Street convinced him to come out of the tower and took steps to obscure the truth.
Note that despite the camera lights on Mariano, the commissioner, and whatzizname as they walk through Suburban station, Mariano is the only one wearing sunglasses. The other men do not seem to be squinting against the lights or otherwise have trouble seeing. The sunglasses seem to be there just to hide Mariano’s eyes. Note also that Mariano said nothing to anybody during the walk.