Can a spouse be removed from health insurance before the divorce is final?

Question Details:

My wife filed for divorce and I agreed to keep her on health insurance for 2 months while she procured her own. After 6 months of keeping her on, I finally removed her, and she fought it with my benefits department. They awarded her the case and placed her back on my health insurance and have been charging me retroactively for 4 months now. They awarded her health insurance up to and through the divorce date, giving her insurance 1 full month even after the divorce. Was I not legally allowed to remove her? Important Notice