| fearcypher |
The site has been having major outage issues recently so that may be why your question is unanswered.
I would say that the bonus damage would apply to an unarmed strike made with the check to maintain the grapple but i don't believe it would apply to the constrict ability as that isn't truly an unarmed strike but rather uses your unarmed strike. Interesting questiona nd there may be some faqs that prove me wrong.