I often lurk in here because it's too hard to talk about MFI as I am going through myself... and insurance is not helping us pay for the testings and stuff so we are pretty much on hold til DH's insurance kicks in end of August.
I'm so sorry you didn't get the result you hoped for. I recommend your DH do 2nd SA in 90 days. It takes up to 90 days to produce new sperm.
Unfortunately, there's not much urologist can do to improve the sperm. IVF with ICSI or TESE would be your best shot. Hang in there!
If you ever need to talk, PM me.