He should be fine to let him go until his next shed. When you see him in blue bump up the humidity and he will have better luck. I usually keep a damp towel on the lid from blue until they shed (rewetting 1-2 times a day) and have had perfect sheds.

My first BP came to me with a retained eye cap. I was unable to help him remove it and he actually ended up getting it off himself just before his first shed with me. He hasn't had any trouble since.