In the episode before last, Rick was hiding by the porch and Joe was sitting on the rail. You could hear mumbling inside the house about finding a woman’s shirt and that she was probably coming back. A fight begins and Joe runs inside, allowing Rick to get away unseen.
Maybe Darryl is in the house and realizes that it’s Michonne’s shirt and the danger she is in and starts the fight??
I think the fight inside the house is toilet guy’s zombie attacking either the guy on the bed or unconscious bandana boy on the floor. Rick purposefully opened the bathroom door for exactly that reason.
That could potentially reduce the gang numbers enough for Daryl to finish off the rest or to escape out the back door and join up with Rick and Michonne and go rescue Beth.
I think that would make an epic episode