Yes, but he shouldn’t have shut down the negotiations in the first place.

1. It’s bad optics for him. He would have known perfectly well which action would be covered by the media, and which one wouldn’t be, and how that would look. It ends up looking like a strategic choice to appear anti-union.
2. It weakens the railworkers union! Now they know they can’t get their demands on their own, they literally have to have federal intervention. Their bosses also know this. Biden also knew this.