The Act only applies to the Rail Infrastructure Owner.
Its totally silent on the issue of rails being removed by someone who is not the owner.
Its also critical to determine who the Rail Infrastructure owner is .
If, for example , the owner is a Govt owned Corporation, then the Govt is not the owner, but merely a shareholder.
The act says the owner may not close the line.
The act goes on to define closing the line to include selling, or otherwise disposing of, the the land - or the tracks being removed.
It doesn't matter who removes the rails, that constitutes the owner having closed the line, which they are not allowed to do.