My thoughts there original plan is and after trp plan is same.
there logic is that Sayali is real tanvi so half rituals fake do and half mangalsutra rituals Sayali do as faith they made for each other. 
I think they never thought this track backfired them like this much, Star is stubborn there ego is big so this murkhapana they never edited but goes with expand time and end soon. If they want Arjun marry any other woman than Sayali they will introduce new cht and fix any how, not priya audiences hate her maker know this, it's is just they never thought results get so bad, they now just panic and never understand what to telecast and edit, so whatever plan they decided go with that.
Don't forget same where they want Sayali in focus because she not fight (her rights) for anything, so fighting for own husband is creativity for TTM makers.
Channel is hell bent to commit suicide, what can viewers do.
They keep changing track depending the numbers, so they decide one track, trp down changes it, mix and match of pre shoot and changed track, editing become sloppy and out of this stupid episode comes out
My guess is original plan to get Priya Arjun married, TRP made them to do U turn, but rituals with her were already shot. So this stupidity
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