Rigging Masterclass?

Spotted in a local sailing club by friend Greg, could this be a high tech innovation for back stay tension? 

And yes it is off center (crooked), maybe to give better tension on starboard tack where the boat has right of way?

The repair to the bottom rudder pintle apparently was made with a piece of plywood packed with Isopon (same as Bondo in US) 

 Hopefully one of those boats for working on rather than sailing.