[Chad C. Mulligan]

They dropped the ballast and were coming up because the carbon fiber was cracking so they knew what was happening

Evidence? Citation? Link?

[plain talk]

James Cameron said
“[W]e understand from inside the community that they had dropped their ascent weights and they were coming up, trying to manage an emergency.”

https://www.seattletimes.com/entertainment/james-cameron-says-titan-submersible-passengers-likely-had-warning-just-before-implosion/