Thanks David, that little bit of sugar made the Agback's necessary but bitter medicine go down a bit easier.
Yes, I share some of the blame here. As Red Knight pointed out, I could have removed the traps. In fact, I thought about it (just as I thought about suggesting to them that they go get Milo). It would fit my MO, but their request before we started was a harder campaign. They don't want to be coddled anymore. Okay, so I didn't coddle them. Perhaps I should have done so anyway in this case, and we've not yet found that balance between how much they want to be coddled by the DM and how much they don't. That much I can easily discuss with them and we can come to a conclussion.
I've decided that before the next session, I'm going to start an open discussion OOC about what went wrong last time with the caveat that there's no finger pointing. We'll go around the table and say what we each individually could have done differently. I'll start with, "I could have modified the dungeon when I figured out you didn't have anyone with DD, or suggested OOC that you go back and get Milo." And then lead the discussion around the table. When it gets back to me, I'll say, "Okay, discuss, but you can't bring up anything that someone else didn't mention in their self-critique."
This will hopefully a) bring out that everyone bore some responsibility in what went wrong including me and that no one person is to blame and b) cool off the angry players while still (hopefully bringing up to the accused player what his mistakes as well). If necessary, at the end, I'll go back and mention some things I think they missed as a critique of how they could do better in the future. I may even give out a little bit of bonus exp for insightful responses.
Does anyone think that this is a better idea?
P.S. - Sorry it took me so long to get back to this thread, but I only have internet at work, and I was slammed most of the day today.
P.P.S - I went back and looked over my notes about last game (wrote the original post here at work) last night and recalled that some things were not quite as I remembered them. When asked if they wanted to take Milo, the other players asked the rogue in question if he thought we needed Milo and he said no. They took him at his word. Second, they didn't bully him into opening the door. They were in a room with four doors and when they discovered that one was trapped, they decided to try the others. He opted w/o warning anyone to open the door himself. It was after that that they tried to threaten him to get him to scout ahead, which he refused to do, hence the other problems. The other time he put them at risk was when confronted with a riddle that had to be answered out loud, they were all trying to work through it together except him. The riddle implied that a wrong answer would lead to disaster, but he blithely and again w/o warning or consulting them shouted out an answer. Turns out he was right, but I think that's when they started to get irked with him.
Z