Bad Situation, whats your play?

[SittinOnDubsWGW]

Alright, a little background. I've just recently moved into an apt with a good friend (Chuck) that I've known for roughly 9-10 years and an acquaintance from school, that I've known for about 3 years (Dave). I'm not real close with Dave, but he's always seemed to be an alright guy, and I've never had any problems with the guy, and I consider him a friend.

So fast forward to last night, I come home from after playing in a cash game with some buds, and I come in and Chuck's hanging out with one of his women in the front room watching TV. I go to drop some stuff off in my bedroom and notice Dave's girlfriend say pretty loudly, "get off, you're on my stomach, it hurts." I kinda just brushed it off, and thought that they might have been play wrestling around or something at first.

As I walk back out to the living room, I'm talking to Chuck, and we hear some more loud screaming (female) coming from Dave's room. Chuck says to me, "dude, that's REAL fighting going on in there, its been going on for like an hour, what should we do." At this point we hear some more "owwww, you're hurting me, let go Dave, LET GO."

Both of us are like "what the [censored], what should we do." Neither one of us has ever had to deal with a situation like this before.

I decide that I'm going to go see if Dave's door is unlocked and I'm going to try to de-esculate the situation. I go up to the door, the door is locked, sh*t. I decide that I'm going to knock on the door and make sure that my presence is known and that if I hear a cry out of "help" the door is coming down. I stuck around for about an hour as there was more yelling and whatnot, before the situation seemed to have calmed down and no more yelling and whatnot, neither one ever came out of the room before I left to go over to my girlfriends.

Was this the best way to handle the situation? What are some recommendations. I think