RE: "Refund400k" - Not 'Refunding' but rather burning/destroying 400k BTS/day?! Disproven! It is refunding the reserve pool.
Don't panic. This here: "worker": [ 0,{ "total_burned": "13172141776315" } ], means that it's a refund worker. The '0' above refers to the worker type, and as you can see