There is nothing dangerous or bad about reptibark. Anything with pine or cedar is bad though. Reptibark contains neither. Could be you were warmed because of them possibly eating some with its prey... I haven't had this problem yet and to my knowledge, taking in a little will not cause an impaction or digestion issues.
My son thought I was crazy too until I sent him the link here. I had snakes years ago, am amazed at exactly how much is involved with it but I do love them both. Yu keep doing what you know is right, the snake will be much healthier and better off for it.