It is his contributing chapter in Metatheory for the 21st Century.
Bhaskar’s distinction between dualistic demi-reality and realistic duality reminds me quite a bit of the real/false reason distinction in that IPS thread. The exploration of which is indeed a metatheoretical endeavor.
Also of note in the article is how Bhaskar’s tripartite description of absolute/relative relations is better than Wilber’s bipartite model. Metatheoretical social science would work through Bhaskar’s middle layer of realistic duality to achieve emancipations, whereas Wilber’s bipartite descriptions only sees how the relative is illusion and hence misses out on effective, relative practices of emancipation (92), instead focusing on individual, internal consciousness practices (94).