I do think attendants can at least sometimes cause pain. I know I have, more so unknowingly in the past, but even now that I'm MDC-educated ( :LOL ), I still cause pain sometimes. I practice in an area where most women almost actively resist taking responsibility for their births. They expect me to be in charge and telling them what to do, or they expect pain meds. Sometimes I'm good at helping mamas with their pain, and sometimes I'm terrible at it, because their experience doesn't match mine and I don't know what to do, or we aren't a good personality fit.
In my own birth history, my first labor was quite intense and painful. It started with my water breaking, and contractions were immediately 2-3 minutes apart. Even though labor started so intense, because it was my first I remember still wondering if this was it, or was something else going on? After just a few contractions, though, the pain was enough to convince me this must be it. I remember having to focus so hard on my labor, I was almost completely unaware of my surroundings, and yet at the same time I have intense memories of odd peripheral things that happened (like my doc coming into the exam room in the office and scooping up my underwear and pad and sniffing them and saying "Oh yes, your water is definitely broken!") I barely remember the attendants around me, but I remember the sensations of that labor clearly. My ds was born just 6 hours after labor started, without pain meds or much intervention, and I was high for weeks after his birth with the incredible feeling of accomplishment. I had very minimal expectations for my birth attendant that time, and don't really remember much about him. In my mind, he was very peripheral to the whole picture and had little to do with my birth.
My second child, I was not satisfied with my planned birth attendants (a group of 6 medwives, with whoever was on call showing up to catch) I fretted and fretted over this during the last weeks of my pregnancy, and worried endlessly about getting one of the ones I didn't like. I had irregular, painless contractions on and off for 3 days finally, then had some bloody show, and a dull back-ache. I was planning on laboring at home as long as possible, then making an end-run. My dh offered to rub my sore back in the shower, so I got in the hot water and he rubbed for a while. I didn't feel anything in the shower, so I decided I wasn't in labor. Shortly after, my water broke, and my body was pushing. The only uncomfortable part of this labor was the trying to keep the baby in until we decided to forget trying to get to the hospital. I pushed once, with a sensation of blissful relief, and my girlie was here. I wouldn't describe any of this labor as pain.
The third was a lovely, attended hospital birth. Labor was more recognizable, but no where near the intensity of #1. I loved my family doc who attended this birth, and had no similar fear about who would show up at the hospital with me. The end of this labor was a little intense, but not bad at all. I felt very well supported and cared for, and really this birth was my favorite attended birth.
My fourth, you think I would have learned from my history that having an attendant I'm not comfortable with was not the way to go. However, due to circumstances too long to explain, I ended up using an OB I wasn't crazy about. This labor started like #3, but became intensely painful once I got to the hospital. I also stalled out for 2 hours or so, with painful contractions that just didn't feel right. I never had an urge to push, but pushed her out anyway because they told me too. At the time, I thought this labor was more painful because she was a bigger baby than my others, but looking back, I know that the pain was definitely intensified by fear of the OB and my lack of trust in her. In my mind, I have a vision of pushing this baby out on my knees, with just my dh doing counterpressure on my back, and my other kids ready to meet the baby. I won't have another opportunity, but if I did, I would either find an attendant I could truly enjoy having around, or UC on purpose.