When did the bends occur?
If you had eyes directly on them at some point and they were fine, then they looked like this upon removal, then you had shaft play and subsequent fin to housing contact.
Doubt that debris would make those sweeping bends, but could be wrong here. Contact is the name of the game here.
Once you have contact, it is anybodies guess if it is still in balance or not. I would highly suggest, not.
The part is now technically compromised. It is replaceable and a balance is HIGHLY suggested.
Yes, these turbos were component balanced, but this debate could go on forever in some circles.
If you have new parts and the ability to have it balanced, you owe it to yourself to do it.
IMHO.