Especially the first couple of bars with the drums, probably utilized Lexicon 224 some how but not sure, maybe something to do with being
out of phase..?

 

Rather proper adjustment of reverb(s) than being out of phase (although reverb is always a bit out of phase).

 

Thanks for the clip.
Haven't heard Frank since the 70's in Mahogany Rush.
They were supposed to play a concert at the Ottawa Civic Center in '74 with Rush as backup.
We hitchhiked to Ottawa just to see it and when we got to the Civic Center there was a sign with 3 words on the door.
"Rock Show Cancelled".
We cried

 

Load a reverb that has a hall reverb. Maybe turn down the highs a bit (add an EQ before or after the reverb, or turn down the highs in the reverbplugin). About 2.4s reverb time. Add a few ms of predelay to let the transients through. Adjust amount (and width/Sides information) to taste.

If you want to hear what the reverb is doing in the song (you posted), solo the Sides channel (the S in M/S=Mid/Sides) and listen to just that.

 

One of the most underrated guitarist on Earth