Only pulled him through the gate as almost everyone does, he lasted maybe 30 seconds and vanished, he did not rubber band, just disappeared. I think there's a Halloween spawn issue going on.
Uncarved pumpkins also say Carved by in the EC, not sure if they always said this.
I have not had any problems on Chessy with the butchers. (Well besides them killing me that is.) It may be the shard you are on or it just so happened to be time for it to despawn.
I think there is a shard wide limit to the number of active butchers and they rotate to the different cemeteries. I have recalled to all the cemeteries in Tram looking for my skeleton and there were only two active butchers.
Logged on after I posted above. Passed out 60 soulbinders, chatted, banksat. Then went to the 6 cemeteries I use. Each had a Butcher. 3 of them spawned a new Butcher when I killed the first. Went to all 6 then redid 3. Got four Kits. Then went to patches. Only had to do the Brit farms. Got 5 pumpkins. No new carvings. Killed 6 named skeles, no bones.