Ok ... not sure how you can "accidentally" complete 5 screens in step 3 of the FILE tab to efile a return BUT if you managed to do so then you will have to wait and see which return is accepted first. Since the IRS doesn't pull returns in the order they were put into the "holding pool" nor do they drain the pools from different companies in any set order no one can tell you which will be accepted.
If the wrong one is accepted then you will have to WAIT and see if the IRS catches your error when processing the return. If they don't then and only then should you amend the return.
