PDog, welcome back and I hope your DD's nights improve again soon. I found things really went to pot when DS was a bit unwell, and we're still trying to claw things back.
Curly, hoorah! Even one night can make such a difference, can't it? Night time nappy leaks are so frustrating.
I had a similar double-take this morning when DS woke wanting feeding - it's usually around 4.30, but he just needed repeated patting at 3.45, then slept till 6am!
We did have at least 5 wakings though - lots in the evening. For some reason he seems to sleep a lot better once I've gone to bed, even though he's only in a cot in our room, not co-sleeping. 
Our wake at 6.30, nap at 8.30 for 45 mins and again at 12.30 for 2 hours, bedtime 18.30 continues to work most of the time, with 'most' being the operative word. We've had another day when DS slept the whole 2 hours without resettling, and another when he only needed resettling once instead of twice. So I think - hope - he is gradually getting the hang of it.
Nights are less good, but we're only 2.5 weeks away from the first of the two developmental spurts that cause the 8/9 month sleep regression so I'm not too worried. (Apparently they're at weeks 37 and 46 - adjust for whether your baby was born early or late.)
IC, not sleeping on the breast sounds like it's worth a try. My DS has never been like that in the mornings - once he's up he's just wide awake & raring to go no matter what, so I can't chip in with my experience there.
I was only upset about something silly, but thanks for asking. I'm a sensitive soul.
On the rare occasions that DH and I have properly argued in front of DS, you could have used his shrieks as a foghorn!