The problem magically fixed itself. I touched nothing, went outside for a minute, came back and it has been working all night.
But for sake of having the information out there;
As I switched patches and/or turned off individual slots, I could here the tone change accordingly behind the delay/reverb. The problem stayed on with 0,1,2,3 slots enabled.
Not overly long before this started happening, I started messing with a chorus/reverb/arena patch. I moved on from there for about a half hour. The problem really very much sounded like that patch got stuck on, but allowed other patches to work in behind it. Almost like I had two patches operating at once, but with the reverb patch way in front.