[quote=@rush99999]
Since I got a crit, can Brut discern any other useful information? Perhaps a way to call the suits off or something along those lines?
[/quote]

Brutrumukk can tell that the animated armors are moving about and acting purely by magic. 
Whoever created these animated suits of armors to act on complex commands must be a powerful mage at the very least. 
He also is able to realize that they are in a theater! Perhaps the location could help them with this situation?

As for figuring out how to call off the suits of armor, that would be an Arcana check.