As I read the article, the only problem is that part of the cable is not buried deep enough into the seabed. I suspect the reason for the "Minimum Burial Depth" is to protect it from trawlers, ships running aground, etc.
The activation order is only for a couple of weeks, and hopefully also provides for keeping shipping, fishing, etc "the heck away from there".
The primary purpose of the "minimum burial depth" requirement is to give environmental extremists and Communists a legal tool with which to hammer the power company and thereby advance their anti-capitalist, anti-business, anti-rational-thought objectives.