You smoked your turbo as soon as the oil feel line disconnected.
Loss of oil pressure + extreme RPM (turbos spin in excess of 100k rpm)= dead turbo.
Before you go hooking up another turbo, I would try to figure out why your last oil feel line came off, and then try to figure out how the situation could be avoided in the future. You don't want to replace the turbo only to have this problem happen again further on down the road.