I don't know what Ina May would say--but I know what I say

I have to guess that the reason your particular issue repeats itself so often for vbacs is because the *conditions of birthing* are being repeated. Everyone is right (on this thread) in a way--position is everything. NOT just baby's position, but mom's positioning, and movement too, throughout labor and pushing. If you dilate to 10 and can't push the baby out--well *maybe* there is a true pelvic issue, at least when your baby's head approaches from a malpositioned (posterior or transverse) attitude.
OR, maybe mom does not have the opportunity to move about during labor as is natural for laboring women, and is told what to do rather than choosing her own positions, and timing, and breathing, for pushing her baby out.
Most babies by far are born in hospitals, with restrictive policies and procedures where movement and positioning are concerned during labor and pushing. Most vbacs also occur in the hospital, with *even more* restrictive policies and procedures in place for so-called 'safety' of mother/baby. So it doesn't surprise me all that much that this issue (dilating fully, not being able to push baby out) repeats itself in vbac so strongly in the stats.
I'm not saying that NO mother has true cephalo-pelvic disproportion. I'm not saying that this issue never happens at homebirth. But I *am* saying that the statistics generated are taken from hospital birth--and in hospitals, there is far too much policy and procedure in place that does restrict the movements and positions which can best support successful birth.
Birth is a dance--a dance of mother and baby--and like any form of dance it involves complimentary movement amongst the partners. When that dance is unhindered, allowed to flow in accordance with mothers' own instincts on movement and positioning, her own instincts on when and how to push, there is a much smaller likelihood of baby getting stuck.
So, if you had a csec for dilating fully but then not being able to move the baby down, do things differently next time! Whether you choose a homebirth (HBAC), or to choose a more open-minded doc and hospital then labor at home with good doula support before going into the hospital for birthing, let yourself dance with your baby. Let the dance move you, knowing that same dance is also moving your baby...the baby is not an inert rock, a passive passenger! Babies also move and position themselves, they are active in that birth dance when they, too, are unhindered. When moms and babies can do their dance together, with support but no interference, most often birth unfolds just as it should.