I totally agree with SAAK that your husband is 100 per cent to blame.This woman might be ringing him because she feels devastated. Your husband should be dealing with this, and if she is becoming threatning maybe call the Police or get a solicitor.
The lady concerned did not need to have this aired on national tv so that you could get your revenge, just horrible, having your husband back should be enough for you.
I know you do not care what others think, however on aibu you are asking if we think you are being unreasonable and I think you are. I am glad you and your husband are reconciled, but their is another very hurt woman in this.