The track north of Deland is going to soon be Amtrak's and CSX is supposed to rebuild it.
Florida — Amtrak Sanford Subdivision Infrastructure Renewal ProjectUp to $3,850,000
National Railroad Passenger Corporation (Amtrak)
Rehabilitates 52 miles of CSX Transportation’s A-Line between Palatka and DeLand train stations in Florida. CSX will transfer the renovated track’s ownership to Amtrak.
The track south of Deland is part of this agreement:
Negotiations with Amtrak subsequently led to a dispute over which party would bear liability for incidents on Amtrak trains operating on the route, which would be owned by SunRail—Amtrak wanted SunRail to assume responsibility for such incidents, while SunRail wanted Amtrak to be liable. The purchase of the trackage from CSX could not be completed until an agreement with Amtrak was reached. On December 10, 2010, it was announced that Amtrak and the state had apparently reached a deal regarding the issue, as Amtrak had dropped its opposition to the sale. On July 1, 2011, Florida Department of Transportation Secretary Ananth Prasad announced that Scott had finally approved the project.
So this accident occured in the no-man's land between Sanford and Deland. It's SunRail's track but they don't use it. So who if anybody is maintaining it? It would appear that CSX has no responsibility here and is pretty much off the hook.