for a laugh... and learning experience for those who have'nt seen it before.
find your local long hill.... blat up it on full boost, get to the top, stop, open the bonnet, (DONT TURN THE ENGINE OFF), have a good look at the back of the engine bay area.... glowing red/yellow
Now would you want to switch off the life support to the glowing turbo at this time? - coolant and oil supply..
It takes ages for it to cool back from glowing..
Hot shut downs account for premature bearing failures. Thats why its not a good thing to do.