It looks like the end may be near for the Talgo VI trainsets if WSDOT and Amtrak follow the recommendations of the NTSB.
Recommendation 11 from the report:
Discontinue the use of the Talgo Series VI trainsets as soon as possible and replace them with passenger railroad equipment that meet all current United States safety requirements.
The Talgo passenger cars are semi-permanently coupled to each other by a device that has the wheels on the bottom and 2 support posts above that run to the top of the railcar. In the accident at least one coupler separated from the 2 passenger cars it connected. The decoupling resulted in a loss of structural compartmentalization of the passenger cars and contributed to the passenger deaths. The swiveling seats also didn't remain in position which contributed to some of the passenger injuries.
I can't see how WSDOT and Amtrak could continue to operate the Talgos given the findings of the NTSB. I've enjoyed them and hope to have at least a few more trips before they are converted into beer cans.