As far as I know, almost any film that as Split-Surrounds, whether it’s Dolby-EX encoded or not is neither hear or there, for the past 8 years now, I have been using a Dolby Pro-Logic decoder amplifier, which as been re-plugged, and via using the pre-outputs from the Kenwood KRF-X9050D THX select, which is outputting the split-surrounds to the Pioneer VSP-200 where decoding of the phantom central imaging is decoded.
Anyway, I guess a lot of you don’t really need to know all the details, except it does work and I haven’t got a single complaint about it's performance.
More recently, I have utilised the use of the Extra channel on the rear of the Pioneer VSP-200, to give me height surround, or (Sonic Whole Overhead Sound) which does work, and as been in use since late October 2005.
All the Pioneer VSP-200, and the Dolby Pro-Logic circuitry is looking for is, in-phase and out-phase signals within the Split-Surrounds mix.
Films like “We Where Soldiers” perfumes very well, as does “Apollo 13” the list can go on forever, so there it is.