That's literally around the corner from where I work. I've been watching that apartment building going up over the last year or so. I saw that video earlier (different source) and I'm glad somebody caught the moment of collapse.
When I drove in today, I saw lots of emergency vehicles and stuff there. The road's closed off, and most of the crane is still hanging from the building.
I imagine it'd be quite hazardous to try and get down. Like if you try cutting it, something may "snap back" and kill whomever is cutting. I would guess the safest thing to do would be to get a monster-sized portable crane in and try and hoist it down to the ground or something, but somebody with experience here would be great. I'm just guessing.