Being a founder, I tend to always take the founders' side, but even with that bias, I'm not sure there's anything wrong here. It sounds like things went to hell, the founders left, and a new CEO came in who used to be an exec with one of the VC firms. Things were very messy. Complicating matters, it doesn't sound like FanDuel was in great financial shape - a Forbes article suggested they could face a cash crunch in 2018.

With what I know, it's hard to attribute anything the VC firms did to malice.