Do what you want...neither approach will help or hurt the plant. I also doubt that you caused the problem by accidentally spraying the leaves. Sometimes it just happens with bamboo and there's nothing that can be done about it.

Thank you kudzu9, I appreciate your help. I thought when I sprayed the leaves in the direct sun they must have burned. Okay, well I'll just leave them.

You're welcome. I have the same problem sometimes with some of my Black bamboo and one of my fargesias. I just let them be...