Almost a year ago I signed a plea agreement to a AGGRAVATED MISDEMEANOR with a sentence of two years and was to go back for sentencing but did not.

A written plea is an admission that you committed the crime.  Even if the county attorney dropped the charge, he can refile it within 3 years of the occurrence.  Even so, absence may toll the statute of limitations and keep the charge running.  As it is unlikely that the county attorney dropped the charge, and your absence likely tolled any time limitations, you can still be sentenced.  However, you need to contact a local attorney immediately to discuss your case. You may now have additional charges, and the plea offer may have been pulled.  You may or may not want to pull your written plea, so contact an attorney immediately.