Can the trade be "voided"? and how?

Been seeing a few articles like this below making mention that the Browns are not looking to "void the trade with the Texans"…

https://www.google.com/amp/s/www.cleveland.com/browns/2022/06/browns-are-still-all-in-on-deshaun-watson-and-not-looking-to-void-the-230-million-contract-sources-say.html%3foutputType=amp

That got me thinking how is that even possible, especially since we've already used some of the picks from the trade this past draft. But, since the Texans are now defendants and may have been "in" on it with Watson providing him NDAs and hotel rooms etc. Does this jeopardize the trade in anyway? If so how… Would we have to forfeit/return the remaining picks from the trade? Exchange/forfeit picks for the ones we already used this past draft?

I know this is an odd situation and an essentially an unprecedented trade, but anyone know the rules in this case?