Mine did that... Replaced the whole joint including the T-peice. Walk softly, carry big mallet. The messing about was gonna cost so much in time, it was easier to cut it off and replace.
you know the connection nut what size is it because i could just buy a new one of those but they seem to be different i have the copper off but cant sperate indivisual nut from one side of bracket and flexi the other side i tryed a mallet and to no avail