I asked for mine to be broken and I still think it was the right thing to do. This was the circumstance:
DD was posterior/asynclitic. I'd been in labor for 32 hours or so. I'd been having some very intense experiences, almost like transition, for about twelve hours. Bc I was vomitting and felt so shaky I was having a hard time drinking and was gettying dehydrated. The midwife offered to attempt to manually reposition DD. I agreed. It worked, but I was afraid she'd turn back. I don't know why, but I was very worried about this--I remember askign the midwife about it twice. After asking about it at least twice she explained that the intanct BOW did make it more possible for her slip back posterior, and that she didn't think it would be problematic to break it at that point, since I was obviously very close to birthing. So I had her go ahead and do it. DD was born about 30 minutes later.
DD was not was going to be born posterior. She had to turn first. She was not descending properly, despite being quite dilated (I don't know for how long--I didn't request any 'checks' for dilation, and at the end I didn't ask, since it wasn't what I was concerned about). Some babies are born posterior, some turn first. DD was not gonna be born until she turned and straightened out. It could have been days longer.
As it was, she was exhausted and had a very hard time latching. Cranial-Sacral helped, but it was a rough couple of days. I think that she could have had more persistant latching and possibly other problems had she had to stay in that poor position for much longer.
I think partly this was a side-affect of pre-natal depression; when I was pregnant I spent a lot of time laying on my couch. This was a bad idea and probably--almost certainly--caused or contributed to her poor positioning.
i don't know if breaking the water was essential or not, but my instincts were telling me that her position was precarious. I wanted to do anything possible for her to not shift back into a back position, but I could not birth in the position that was optimal--it just felt wrong. AROM worked for me. It was done respectfully, reluctantly even, and at my informed request. It was peacefuly and it worked. In the same situation, I'd do the same thing again, but I hope to avoid that situation next time by being more careful about positoning when pg.
Contractions did not get worse, in fact, once the manual repositioning/AROM was done, they hurt a lot less. For a while the contractions felt *wrong*, like the baby was being pushed in the wrong direction, which to a degree was true. After those interventions it felt *good*, except for very slight tearing when her head was born
So that is my story of AROM.