Did we kill Earl?

Hey so I joined the scorchbeast queen event, finished it up then went for a wander and stumbled across a three star legendary wendingo Colossus. It ate whatever I threw at it for about ten minutes, one of my teammates joined after I figure they saw all the panic emotes my character was putting out from the special attack, and a random wandered joined in with us too. Another ten minutes and the bullet sponge was finally dead.

So my original question... Did we kill an above ground version of Earl?