I was thinking - go ahead and sue, when discovery comes into play and they have to testify under oath (for example were they raising money properly and how were they managing money) - many will not want to answer that question while on the stand. 

President Trump’s nominee for Treasury Secretary, Scott Bessent, testified that extending the ‘Tax Cuts and Jobs Act’ of 2017 is essential to avoiding economic catastrophe.

If somebody sues the buyer, I want seller and tenant both stuck with the words in the Tenant Estoppel Letter, and not able to testify to anything different.The exact wording of the Tenant Estoppel Letter should be negotiated between buyer and seller as part of the Purchase Agreement negotiations.

Quote from @Ryan Brown: Quote from @Tim Delaney: Hopefully your lease has "right to quiet enjoyment" clauses which would give you grounds to evict, however if you don't have audio then you will be reliant on the other tenants providing statements or testifying at the eviction hearing.

Ive testified at all levels of government on behalf of the organizations Ive worked with typically on the intersection of data and housing policy. 

If tenant raises factual defenses such as falsifying the lease or claiming they paid rent, there would be a brief trial which you would be prepared to testify against. 

He testified that he used his personal bedroom exclusively forbusiness purposes but later testified that he slept and ate in his bedroom.

If the case was substantial, I would imaging your lawyer could subpoena the officers to have them testify to what they witnessed. 

Reread what @Stuart Udis wrote.We can testify to the same challenges after 25 years in our marketplace.We also agree with @Kristian Sexton about starting with a PMC.

I know people who worked there at the time who testified in court during the share-holder lawsuit that it was "clear-cut fraud".