Can I get a domestic violence charge dropped if my spouse now wishes to have them dropped as well?

While your spouse may have dropped the domestic violence charges, depending on the dangerousness of the activity alleged and what all transpired, the State of Arizona may still charge you with assault (13-1203) or harassment (13-2921), or even endangerment to your spouse or a child (if one was present during the altercation) (13-1201). However if you were drugged with ketamine against your will, that may operate as a defense against any forthcoming indictment.