I just did with mine too after 400 km (the Canadian Tire Schwinn, same motor but vertical mount). I was lucky to be able to patch it on the road without removing the wheel. I removed it once back home. It's a pita to do. I just changed my rear tire to a flat proof Amerityre. It's filled and without a tube. It's a first for me and I'll be testing it out in the coming days. I'll keep the original tire as a spare for the front when it wears out.

edit: The Amerityre tire came off the aluminum rim while rolling. This bent it seriously. I will be testing it with a steel rim soon. The bike shop says it works with steel rims only.