Hemangiomas can be treated with surgical excision, endovascular embolization (using a catheter to stop blood flow to the tumor), radiation, or sclerosis (injection a caustic agent such as ethanol). The modality used for a particular patient depends on the size, location, and neurologic status. Therefore I can not advise you regarding which modality is best. I would recommend that you have a second opinion at an academic spine center. We have an excellent spine center, and I would particularly recommend either Dr. Benzel or Dr. Kalfas. They are both well known spine neurosurgeons with many years of experience. Good Luck.
I read with great interest your history. My symptoms had been very similar to yours. I had a hemangioma at T3. My first surgery was a laminectomy (T2-T4), and decompression of the spinal cord, removing as much hemangioma as they could. This was followed by vertebroplasty of T3, injecting it with a plastic to displace tumor and strengthen the vertebra.
After a few months, I returned for more surgery. A small amount of the plastic had escaped and was compressing the spinal cord, and the hemangioma had continued to grow.
Two years later, symptoms reappeared, and it was round 3 of surgery. Plan was to remove the vertebra and replace it with bone from my hip. Complications during surgery made this impossible, so they removed tumor they could see, and did further decompression. This was followed by radiation to scar the tissue, and prevent future growth.
It has been two years since this was done. I have two MRI's which show no new growth to date. I know this offers no future guarantee, but it seems to have worked this far. I have some numbness in my toes and ankles, either from spinal cord damage or the effects of radiation.
Just thought you might like to hear someone else's story. Good luck on your journey.