I see this and laugh, but then I realized something. As he is talking about a mistake, he gestures to Thomas when he says "and this is what happeneds." Thinking about it, in "Can lying be good?" Roman refers to Thomas as a mistake when he is acting Thomas's mom. This gets me thinking. Does Thomas see himself as a mistake? Even if it's just what his character is thinking, he still sees himself as a mistake. Thomas angst.

Since both Roman and Logan are both in Thomas's mind (Logan quite literally being his mind) would say what Thomas is thinking. There go, Thomas could see himself as a mistake.

Just my theory though.