I have a similar issue.
I married my wife six months ago and started a new job around the same time.
I have around $2,000 in an HSA that I had with my old employer, and now I am on health insurance through my wife's employer. Fees are going to (very) slowly chip away at my HSA, and I cannot transfer it to my wife's HSA.
So, same question as Murse: can I use my HSA to pay for our health costs until it is used up?