Incapacity Benefit, having lodgers taken as Permitted Work

Has anyone heard of this? I haven’t had the benefit of seeing the papers yet but the case appears to be:

Client on ICB, no IS top-up, not (at the time) converted to ESA

Had 2 lodgers, not providing meals or services, just rooms, and the arrangement pre-dated IB claim.

JC+ take it upon themselves to get client to sign forms saying is self-employed and doing Permitted Work (higher limit)

After 52 weeks they terminate IB as client still doing PW.

I’m just at the beginning of this, but if anyone has seen it before, I’d be grateful for pointers. It could be blatantly obvious, but it ain’t to me…..