As mentioned in my Thistletop question thread, the group actually accepted Gogmurt's proposal to go after the "longshanks" and leave the goblins alone. They couldn't guarantee they wouldn't kill any goblins, but being evil, Gogmurt was OK with that, as long as they tried.
So they got across the bridge, listened at every door, and the ranger with +10 perception earned his keep. They heard the goblins in the throne room and goblin dogs in the courtyard, so intentionally avoided opening those doors, eventually finding the stairs down.
Downstairs, they heard Bruthazmus with his harem and avoided them, thinking it was just more goblins. They found Orik, knocked him down to -4 HP, took his stuff, and left him tied up, intending to grab him on their way out to take back to Sandpoint.
Then they hit the temple, and the yeth hounds woke the whole complex, before the PCs killed them. I decided that yeth hounds were smart enough to give up trying to bite the heavily armored tin cans after 3 rounds of not getting through the armor, and go after easier targets within a 5 foot step, especially when one of those other targets was the one doing the most damage to them (ranger with silver arrows), so the group had some healing to do after the fight.
I started doing the math on how long it'll take Bruthazmus to put on his armor, go look for Orik, grunt in disgust at Orik being stripped and left tied up, then make his way to the temple. During that same time, Lyrie will be going down to let Nualia know there's noise coming from the temple, and they (along with the third yeth hound) should also come to the temple to see what's going on. Unfortunately, I got around 14 or 15 rounds for both of them, starting from the first round of combat in the temple, when those 2 hounds howled. If the group has to fight Bruthazmus, Lyrie, Nualia, and the third yeth hound all at once, things could go badly. And I was considering having Warchief Ripnugget send the 6 sleeping goblins from the barracks downstairs to check things out, too.
I'm thinking maybe Lyrie and Nualia won't be in a rush, since they'll figure it's just the goblins upsetting the hounds, so that will give me an excuse to delay their entry. Maybe I'll intentionally decide in advance how many rounds of combat the group will have against Bruthazmus alone before the others arrive, like 3 or 4 rounds. That will give them a chance to soften him up, if not finish him off outright, before things get ugly.