Rail Track says 'Jump' and the BA jumps.
BA says 'Jump' and Rail Track turns its back and ignores them.
As for who pays, well, Norwich City benefits by the barge's removal. as does the barge owner, as does Rail Track, hopefully some if not all the dosh is coming from that direction.
I'.m only guessing but she could be stripped to the waterline at the Deal Ground and then the remaining hull slipped at Yarmouth for final deconstruction.