A slight oil weep is fixable, 9 out of 10 times, when they are puking oil that bad, the thrust bearing or a journal bearing let loose, causing the turbine side piston ring/ shaft/ turbine wheel, to destroy the sealing surface of the bearing housing. Basically, same deal as an engine, but have a severely scored cylinder wall, you dont just put new rings in it and go.
So with that said,if the thrust or a journal bearing failed, your bearing housing is shot and your shaft is shot. If the thrust fails, your backing plate is shot, and your tin heat shield is shot.
The ONLY time Ive seen them puke like that and be "OK" is when a crank case vent gets plugged shut, causing the oil not to drain and it has no choice but to push out past the turbine and compressor piston rings.
I may be 100% wrong here, but I highly doubt it with that much oil.
Not trying to be a keyboard warrior, but I hate seeing people spend money on a rebuild kit, think all is well, and then have to call me a week later with the same problem needing a new turbo.
OP, pull that turbo apart and post some pics, I'll be glad to tell you if it is fixable.
-- James