Some doctors limit weight bearing for a number of reasons, I can't say I've ever read where a doctor limits your weight bearing due to bone spurs, maybre they were really severe. None of us are doctors so listen to your doctor as he is the only person who is educated and knows your husband's case.
In regard to pain in the hip 7 days post op.... is he having shooting pain (like a 9 or 10) when he places 50% weight on, or is it more like pain near and around the incision? If your husband is having really bad shooting pain I would call the doctor, but discomfort 7 days post op is very normal. Make sure he is icing the hip area and make sure to elevate if he has any swelling.
Let your husband know that everyone heals at different lengths of time, some people take a few weeks until they feel really well, others at 10 days are moving around like crazy.
I wish your husband lot's of luck with his hip.
Chuck
Chuck