Yes, that is a lot of money, especially when you could have used that money to get the kids some things. BTW, had he given you half of that, you could have moved the dog over to your place.
He's just like all of them, greedy, sneaky, cries poor me and lies. His house that is built on a sand dune is starting to rock. Time for the tide to roll in and wash the sand away. It's coming slowly but surely. Be patient.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.