Help With Quickbooks! I Accidentally Turned My Version Into The Accountants Version. How Do I Undo?

Do you mean that it thinks there is an Accountant’s copy out there and it’s waiting for the accountants copy to come back with changes? If so, go under File and I believe you can cancel the accountants copy.
However if somehow your copy that you are using is the accountants copy, I have no idea what to do, except maybe try and load the original file for your company, whereever it is located on your hard drive.