It sounds pretty scary to be on the back of a motorcycle and have a seizure! Especially at 65 mph!

I hope you stay off there until you get some feedback from your Neurologist.
I would like to welcome you to the NeuroTalk group and I'm sure you will find some help here. Everyone is very helpful and loving.
Good luck and we hope to hear how it turns out.
Take care, and keep your feet on the ground until you know what's happening!