Your husband's actions immediately after a seizure are a normal reaction after a seizure. It's called the "Post Ictal" state. It usually lasts a few mins.
It causes confusion, delerium, and/or irritability. It's not a side effect from the meds but from the seizure itself.
It's probably better to let him "ride it out" and consider the source (the seizure) and that it is only tempoary.
I speak from 32 years of epilepsy and several epilepsy forums that I've been involved with.