What boundary did you set? What did you say the consequence would be if he's not transparent? AFter you calm down and wait the 24/48 hrs, you must state the boundary again and the consequence. H may not believe you, may ignore you, but it's all tests. It's all tests to see if he can cause Rabbit to bun fight him. He is operating out of your old pattern and you must be the strong one to lead the new pattern of relating.
I would do the boundary exercise that folks on here suggest - "When you do _______________, I feel ______________, and when you do it I will do ______________.
Then the hard part - you have to do that last bit.