What is the best refinance option?

Then you will not qualify for the FHA secure loan.

As far as qualifing on any given loan FHA or not talk to mortgage professional ( you will need to provide them with the nessesary information to qualify you ) if you trying to get FHA mortgage make sure the Mortgage provider is FHA approved (many say they are but they are not) And to get an FHA loan with sub 600 scores you will need an FHA provider that will do manual underwriting.
If you have alot of equity in the home FHA might not be your only solution either.
My biggest concern is that according to you, you and your spouse make close to 100k a year and having trouble paying a 180k mortgage. Why this is happening? What is the underlying problem? Are you overextended? Do you need to consolidate bills? Is this a money management issue? Or just plain irresponcible behavior? Are you spending money you dont have? Can you cut your monthly spendings down to nessesitiees only and fix your financial situation?
Answer these questions for yourselves and it should give you a good idea what to do.

Eugene, those questions have been asked and are currently being answered/resolved. but the underlying source is due to some legal issues, between me and my former spouse, which has caused the financial stress, leading to this..

I agree with Eugene that before considering an FHA loan, you must ensure if the mortgage company is really FHA approved or not. Otherwise, you may face problem later.