Yup. The boiled-down role of an agent is to represent his client to the team. If the agent were truly going dark on the team in the same way the player appears to be, that would be borderline breach of contract. And if the agent can't get the client to respond to his own inquires, that would be incompetence, and not even borderline.
Given the ongoing relationship across the years between Al Avila and Gene Mato, if for no other reason than for all the deals they have done with Mato's clients, I'd be really surprised to learn that Mato is also ghosting Avila. After all, his own commission is in danger here, should the Tigers pursue legal action against the contract, so I don't see how he benefits by teaming up with his client against a team he has such a deep relationship with—especially since if the contract is voided or negotiated out, who's going to sign his client to anything more than a cheap one-year deal if that?
I can't say that Rodriguez is not ghosting Mato, too, but unless Rodriguez is having some kind of truly psychotic episode, which would be awful but also exculpatory, I'd be surprised to learn that Mato cannot get a hold of Rodriguez somehow.
So, I think there's a decent chance that everybody in this triangle knows where the other two are and what's going on with them, and that we're the ones who have no idea, because we the fans are being managed. I have no evidence of this so I am not making a declaration here. Just a decent chance, as I view it.