It's very liberal, but what I think silas did was mainly base the track on the section at :38 in the original, and if you listen to the rhythm/bassline, there are some similarities, although obviously the remix is much, much slower.
I will admit, this was kind of an oversight on our part. We had a tough time paring down the Symphonia side of the project, considering there are so many good original tracks there, and we did leave out a few that in retrospect, we shouldn't have. Luckily, we'll be adding Showroom Dummy's remix from PRC119 (which Rexy just linked to), along with a few more bonus tracks that I found to the website soon.