Whats up with Vergil's shadow in the end?

[Anthony]

http://www.twitch.tv/infernoblast32/b/669868519
In the stream in the ending cutscene whats up with Vergil's shadow it look like he's holding the lucifer devil arm or something...

 

[Foxtrot94]

The shadow looks like Nero's DT actually. Another hint at Vergil being his father, or related to him anyway.