Brendan answered two question backstage at the Gemini Awards for Dvrplayground.com:
Will you be making a return appearance on BONES:
Brendan Fehr: I’ve actually already shot a second episode and I’ve been informed that they [they, being the BONES writers] have tentative plans to have me come back.
Can you spill anything on the story-line:
Brendan Fehr: I don’t know what the story-line will be for the character. But I do know they want to flesh out my character. And given the opportunity, I’d love to come back.