[vladsmythe]

It may never have been transcoded. If it was taped in the UK, it would be transcoded. But since it was clearly filmed, the transfer to video could have just as easily been to PAL as it was to NTSC. "Charlie Is My Darling" by The Rolling Stones is a classic example of British film that was transferred to NTSC and thus, allowed in trackers.
I think TTD tries to be sure of lineage, and if in doubt....pulled. Bummer, because it's a great show!