To get back to the poster's original question (even though he has already resolved his problem) -- the answer is yes, you can put miles from CO into a spouse's HH account.

I know because I did exactly this. I had about 5000 CO miles and it made more sense for them to go into my husband's HH account because that would take him to a level where we could redeem an award. This was accomplished with no problems. Might have helped that we have the same last name...