Vincent is listening, at least mostly, as the projection continues and it sounds like someone is dying, as screams are happening, as the pretty faced woman in front of him snarls in anger. But he doesn’t react even a little bit to any of it outwardly, still sitting in the exact same position with his eyes staring at the table. He’s told to Stay, and so like the obedient dog he is, he doesn’t move a single inch, even as no one is attending their table any more.
The world hardly feels real, right now, like he’s watching a dream play out around him. And in a way, he kind of is, what with this being a projection and all. And as the world fades away, as he hears that ghost of a laugh… As he’s suddenly standing in the projection room instead of sitting at a table in the projection. it all still doesn’t feel real even then.

From an outside view, Vincent doesn’t seem to be panicked any, or particularly emotional at all following everything that’s happened. That probably means he’s fine, right? He doesn’t look angry, or sad, or scared, or judgmental, or anything that would generally read as a problem.
Though instead, Vincent just looks… blank, with slow steady breaths and a far away look in his eyes, like he’s not quite registering the world around him. His eyes aren’t tracking anything in particular, and he doesn’t even react or respond to Hikaru’s joke(?) threat on his life other than to slowly nod after a moment. But he doesn’t make an effort to actually say anything right now, so it’s unclear if he’ll actually help do that later or if someone else will want to jump in and do it first.
…He is just standing there though, and probably won’t end up moving at all until someone either tells him to get out or otherwise guides him to the door, be it a warden or someone else. At the very least, this time he won’t resist being led anywhere, so that probably won’t be too hard.