Happend to me almost the same way. Pop neir full boost. I had run away neir 5000+ I’m in a auto and I neutral dropped at first sign to stall. runaway scared me so I have a shutoff valve now on a pull cableIf it's catastrophic, I think you'll know it.
For me, it literally made a loud POP at 3500rpm. Huge loss of power. Cloud of smoke out the back. A bit of noise as the engine chowed down on chunks of turbo blades.
Fins made contact with the compressor housing at high speed. The compressor wheel disintegrated.
I managed to get mine off the highway pretty quickly. Engine started to run away within 30 seconds of the POP.
I stalled it out before it really got going. ( manual trans).