I have my doubts.  Although there isn't anything clear-cut in print that says if correcting Basis is a change in method of accounting, somebody on TaxAlmanac/TalkProTalk called the lawyer at the IRS that wrote that Revenue Procedure.

The IRS lawyer said he gets asked that all of the time, and wrong Basis is NOT a change in method of accounting.  As a mathematical or posting error" it would not qualify for Form 3115.

Out of curiosity, who is putting on that seminar?