I've had significant balance/disequilibrium problems too, this year. My neurosurgeon prescribed trental about 2.5 months ago. It's a blood thinner type medication that is used for all sorts of things - most relevant to us is the fact that it has been successfully used to treat fibrosis after radiation treatment for cancer (breast cancer). I abruptly improved about 2-3 weeks ago. I went from stumbling and running into walls about 6 times a day to just about 1 time a day. I have entire periods from 15 minutes to an hour long in which I don't notice these symptoms at all. What a relief!!
Was it the trental? Would I have just compensated on my own without meds (good possibility)? We'll probably never know for sure. I go for my 1 year MRI re-check on Saturday, and get the results on Tuesday. You can bet I'll be posting a complete update at that time.
ironstorm, it is very early since your surgery. I had treatment last March, and my side effects crept up slowly, and have taken about 9 months to diminish. I think there is an excellent chance your balance will recover completely, given some time. Just keep moving, like others have suggested.