Early on I always made a clean back on bamboo with a cabinet scraper followed by sandpaper. I raised a splinter very now and then and decided it was the way I removed the rind. On close examination I could see tiny cuts across the back every so often where I had put the cabinet scraper hook down on the bamboo back. You just about needed a magnifying glass to see them but they were there and showed up with that first coat of stain. No matter how carefully I used my cabinet scraper I could still find one or two tiny cuts, all it takes is one to pop a splinter and these things were microscopic.
I changed my procedure to light scraping to get partially through the rind and sandpaper for all the rest, leaving more rind at the nodes and any down in the valleys between the nodes untouched. None of the bows I made after I changed my ways about 10 years ago have popped a bamboo splinter.
Back in the day everyone wants my bamboo backed bows and I really cranked them out. Being semi retired from bow making now I have only made one in the last two years.