Off-topic, but this reminds me of Schroeder's scene in "It's The Great Pumpkin, Charlie Brown" from 1966. Anyone know what I'm talking about? At one point the story stops dead in its tracks when Snoopy mosies on up to Schroeder's piano and starts dancing to a WWI-themed instrumental (I forget what it's called). Schroeder keeps switching back and forth from light and happy to mournful, and Snoopy gets all bipolar--giddy one moment and sobbing the next. The music gets so sad that Snoopy can't take it anymore and runs out of the house sobbing and howling. Then once he gets himself under control he sneaks into the pumpkin patch where Sally and Linus are waiting for the Great Pumpkin to show up.
I don't know if ABC has been showing it lately, but in the last bunch of years that CBS broadcast it, they cut out the scene entirely (it's about two and a half minutes long). The stupid part is that the first time that special was ever put on video in the mid-80s, they took it from a copy with the scene cut out. I only know it exists because I taped it in 1989 and they happened to show it that year. But clearly they had already cut it in other years before that, since the edited version already existed and was put on video.
It's odd that PBS would cut out the tag on CEoSS. Obviously the Peanuts cut is to get another commercial break in there, but unless it's a pledge drive, I can't think why PBS would do the same thing.