Crazed McGregor, 29, burst into the Barclays Center in Brooklyn and smashed the bus of fighter Khabib Nurmagomedov with a trolley before trying to launch a metal barrier at it.
It has since emerged that after the bizarre outburst the Irish MMA fighter text UFC boss Dana White saying “It had to be done.”
During the footage McGregor and his crew can be seen punching the windows of the bus and trying to throw various items, from barriers and bins, at the window.
McGregor launches a sack barrow at a window, causing glass to shatter everywhere.
Inside the coach UFC lightweight fighter Michael Chiesa was left with a cut to his head, causing blood to stream down his face.
Yesterday he appeared in court in New York where he was told he would be allowed to fly back to his home in Ireland ahead of his next appearance on June 14.
His attorney reassured the Judge that McGregor isn’t a flight risk, saying: “He’s the most visible face on the planet.”
Bail bondsman Ira Judelson told TMZ McGregor will have to report to him over the phone once a week and all travel must be pre-approved.
Cian Cowley, 25, also a mixed martial arts fighter from Dublin, was charged with assault and his bail was set at $25000.
It comes as the dramatic picture of McGregor being grilled by cops behind a glass screen emerged.