Boost Spike Damage

[zizrac]

I need some tech troubleshooting after a very large boost spike. I've been running 13lbs and a very unfortunate situation led to a 28lbs spike.

The only reason my engine is still running is because I think my Garrett GT35R turbo popped before I had time to even react to the spike...I'm thinking good thing it did. I assume it popped because I no longer have boost. So my first question is, can a turbo be dead even if it still spins? I pulled it off the car and I can spin the wheel without any noticeable damage to the fins or bearings.

Second problem is that I could not get my engine over 5K rpms. It starts, idles, and runs fine till that point. I was thinking the damaged turbo was restricting airflow, but since it spin ok I'm having second thoughts about my motor being ok. Do you think I damaged/popped my motor too?

My last question is, do you know where I can get a GT35R...Cheap!! (.82 A/R Turbine) Thanks for your help.