How was this "stereo" effect achieved?

I'm talking about Andy Stott - Take. Drums on this track seem to be alternating between mono, stereo, left, right while having some dropouts. I find rc20 magnetic effect similar but it is still far from original. Thanks for your help.
 
Sounds like a chorus/doubling effect with the wet knob being automated every other beat to go from mono to stereo. God it dives me mad i don't like it :shame:
 
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