I hate to be the one to say this but what's the point?
Like sure it was probably a fun, camraderie inducing exercise for the Greenpeacers and it got them out doors and doing teamwork, but it's not bringing attention to anything the general public doesn't already know. And it's certainly not changing opinions on anything for the higher ups, except maybe harsher punishments for eco-activists.
So if the resources used for this stunt are more damaging to the world than not having pulled it at all, and the activists involved are going to be arrested and face serious repercussions for tampering with an oil rig, what was the point?