I am amazed that the Amtrak Department of Nationwide 24 Hour On Call One-Hour Substitute Bus, Row Boat, Dog Sled, Ski Patrol, Helicopter, Catering, Mounted Cavalry, and Fully-Qualified Extra Crew dropped the ball on this.
I guess you haven't ever noticed, Amtrak runs trains 24x7. Amtrak doesn't stop all it trains for the night at 5pm, and it even has some trains that run on the weekends!
Surprise, surprise!
So, yes, Amtrak needs to have the appropriate staff, available, whenever a major problem or event occurs on any of its routes.
You mock the comment, making it sound ridiculous to expect Amtrak to be able to find a "Fully-Qualified" relief train crew even after 24 hours. I find that toally shameful that they can't.