Could Viacom tell Playmates no?

[neatoman]

So I've seen a lot of complaints about Playmatesmeddling with the Nickelodeon cartoon, as well as a general dissatisfaction with the actual toys they produce. And it does seem kind of strange to me that Playmates still seems to have this iron hand over the franchise, I get why Fred Wolf and 4Kids had to listen to playmates as they probably didn't have much choice, but what about Viacom?

Could Viacom tell Playmates "No, we're gonna find some other toy campany to make TMNT toys"?