Unusual haze. Expect it to clean up?

[Noritar]

This is in the rear optical group of a Schneider 60mm Curtagon for Exakta 66/P6. This was costly but also hard to find. I'm weighing having it serviced vs returning it. I believe there is a cemented elements in the rear group, but I can't find optical diagrams for these Schneider made Exakta 66 lenses (I have 60/80/150/250). There is another Curtagon for auction right now with identical rear group haze. Pics below. Those concentric rings in the haze/fungus make nervous about some sort of atypical separation...?

Opinions?

[Noritar]

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[Noritar]

It looks just like in the video posted to this one for sale: Click here to see on Ebay

[visualopsins]

[Noritar]

[kiddo]

almost always, in my case, haze have hiden more issues than seen before cleaning, and those issues have gotten to be worse