He also sent 217.5096BTC 
So, if you don't mind sharing, how did you come to that agreement?
For 1170btc this is about 500btc.
And maybe some personals reason on his side, not sure about that but I think he had some regrets on what he did to me.
The amount was so big that it would be acceptable for him to sacrifice part of the loot so he has both his conscience right and feel less stressed that everybody chase him.
I think u may consider sharing 43% of the recovered coins to those who helped to corner the thief.