I agree. IVF with ICSI might be a good option (with the testicular biopsy).
Yes, your DH has an uncommon issue, but there might a solution. I would schedule an appt with a Reproductive Endocrinologist (RE).
My advise is to be supportive of your DH. This is going to be hard for him to take in. They way I approached our issues, was as OUR issues. Let him know you stand bu him 100%!

and let us know what you plan to do. This is kind of a quiet board and you might find good support on the IVF board or somewhere around this forum.