Is it illegal to remove a spouse from health insurance policy without notice and leave them uninsured?

Question Details:

After a spat with my husband in 10/09, he filled out his open enrollment for his health plan and omitted my name and information. The BCBS administrator left me off and is telling me that they cannot put me back on the plan because open enrollment is over (I was covered under the plan for 7 years prior). We are still married and have no separation agreement. Was that illegal? How do I rectify? Important Notice