Inviting Vic was a bad idea.
I don't really have a side on the situation, but you can understand that when the animation companies such as Funimation and RT broke contact, it was for their own safety. Besides that though, if they really wanted to have Vic there, he should've been signed on for this at the same time as the other VAs.
It's just poor organization/greed. I will admit that it's a shame the other VA's couldn't put their work ahead of them on this however. Large conventions like these require better planning.