So what is the general story, I guess that isn't enough for me to prompt my memory.
Edit: Never mind I googled it. It is the Mark Hofmann bombings.
I will tell you the mormon explanation for the document side of this. It is the fact that the church is still run by human beings, and as human beings they want validation, as we all do. So when something like this comes up the human side will want find something to believe in it. Same goes for the opponents of the church. They are excited to see things proven wrong. So even when the documents were shown to be false, simply the fact that the leadership of the church become so interested in the documents which are shown to be forgeries cause people to point to that as the unassailable evidence the church is a fraud, since they were duped, but in the end everyone was duped. And since the church is still run by humans, they are subject to dupery (is that a word?) like everyone else is. So the church stance most often is that the divine nature of the church and its mission is not changed simply because the leadership occasionally fall to normal human temptations, as humans are wont to do. And God planned for all this as he knew he was entrusting his church to mere humans, and so the flaws of the latter are accounted for in the teachings and governance of the organization.
One way to look at this is that our system of government in America is great, and resilient, and overall generally effective in maintaining our unique democracy. Revered by many, if not most. Recently we had members of that leadership go astray, and support someone who didn't uphold the values we all associate with our republic. They even defended a group that stormed the capitol and ended in deaths there. Does this mean that the entire institution is now "false" and needs to be torn down? Do we need to help people escape America since the leadership is shown to be fallible? No, the organization can weather this storm, and in the end the ship will be righted.
The mormons view this much the same way. The base organization is good and right, even when the people in it are behaving, well, like humans.
In a nut shell anyway.