How rotten of the little buggers..

They're not concerned about you, though, just their pocket books..
You probably should have told your Neuro first, but I'm sure you will make your Doc understand. Tell your Neuro that you want to try LDN for awhile.
It's not as though you've given up the cure. At best, Copaxone may slow progression and, with you, it has not done that.
If it were me, I'd call them back and tell them what you think of their tattling on you. Send 'em a basket of Razzberries..

Did you tell them how much better you feel, after stopping the C?
Remind all of them that, it's you that have the MS and it's your body and your decision. They are all there to help you not the other way around.
Don't doubt yourself. You thought long and hard before making the decision to stop C and I think you made the right decision for you.