Randy,
I agree that this is likely a conflict of interest.
However, just because there is a conflict of interest doesn't indicate anything illegal is happening.
I refer you to davis-striling.com's
conflict of interest page.
If the conflict was disclosed to the board, if (because the husband was bidding) the manager wasn't providing information on other bids, If the work done is satisfactory and if there is the proper insurance, then the conflict is minimized and the Association may be getting better service (since the work of one spouse could affect the contract renewal of the other).
If your concerned that the Association is paying too much, ask to see a blind comparison (company names removed) of the bids. If your concerned that the work isn't being done properly, point the issues out to the manager with a copy to all board members.
As John said, more information would be needed before it can be determined if the perceived issues are actual issues.