Partners are not always supportive. You can't control his views, but you can control your reaction to them. Be realistic about what he is capable of, if he can't/doesn't support you in this VBAC, don't expect him to. Hire a doula to help you, instead. He is telling you right now that he doesn't support you (probably because he is scared and doesn't like the uncertainty) so listen to him and make sure you have support, but don't expect it from him. You can do this, but don't fight a losing battle or set your partner up for failure by expecting him to give you the support you need and deserve when he is telling you that he can't.
Think about how much you want to VBAC. If you really want it, do everything you can to get baby head-down and give yourself the best chance for VBAC. You have to decide very quickly and commit your energy. Do you believe you can do it? If so, then go for it.
Try the moxibustion, try the version, try the positioning/breech tilt:
Breech Tilt (by Anne Frye)
If visualization alone does not lead to spontaneous version of a breech baby, have the mother begin the breech tilt at 30 to 32 weeks. For 15 to 20 minutes, six to eight times daily, prop an ironing board or other flat object the height of a couch; pad the board and have her lie on it, head down. Mother should massage the baby preferably in a face/head forward position with one hand cupped around the occiput and one cupped around the breech, moving the head forward and lifting the bottom in a rotating motion. As soon as the baby turns, she should get up and walk or squat. Often, if mother performs the tilt three days in a row as described and then stops for the fourth day, the baby seems to assume the vertex position on its own in anticipation of the exercise.
— Anne Frye,
Midwifery Today Issue 18
WHAT IS KNEE CHEST POSITION?
This is the knee-chest position for turning breech babies. Twice a day for 20 minutes. This is also the best way to keep women from pushing prematurely (before full dilation will allow the aftercoming head through the cervix) and, overall, the ideal position for physiologic birth of a breech baby.
If baby doesn't move after all that, you can try to wait until you go into labor and see if baby turns then, investigate your options for breech birth or schedule a c/s. Whatever you decide, just make sure that it is a decision that you feel good about so that you don't blame your partner later.
Hope baby turns for you!