Is Remission Possible in Lewy Body Dementia?

It's been over 6 months since Depakote was added to DH's meds. He continues to do extremely well, as if the disease never happened—a complete turnaround from the aggressive, combative and deranged psychopath he displayed last October (not caused by UTI infection). If you didn't know it, he appears/behaves as normal as can be. He's pleasant, sweet, alert, aware, with short and long-term memories in tact. He addresses staff and residents by name and greets them whenever passing by in hallways or the activity room. Around same time last year, he was a recluse opting to lie in bed all day staring at the ceiling, and refusing to eat at times or scarfing food down as if there's no tomorrow. Now, he wants to watch his favorite movies, so I got him a portable blu ray DVD player, and he started to operate it on his own without so much as even a peek at the instruction manual. Every morning, he's the first to go to the dining hall to wait for breakfast and eats at a normal pace. He does sit-ups and pushups in his room, reads the daily newspaper, even watches CNN in a neighbor's room and is now asking for his own TV. Says he's already finished all the movies including the original Star Trek series and is asking for the Star Trek Next Generation series among other favorites. The only remnant of the illness is that he still resists showers and pushes back when staff removes dirty laundry, although the resistance meter is way lower. Moreover, his urinary incontinence is completely gone! All of these changes just by having Depakote added.

Is this for real?! I know fluctuations are a hallmark of LBD, but lasting this long and seemingly getting better each month? Has anyone else seen this happen to their LOs? Is remission even possible? This is blowing my mind.