Taxtony I did no workaround. My TurboTax file still contained Form 2210 with Part II Box A checked and with the Explanation Statement. When I print the "Return Only," the first page of Form 2210 is included with the annotation "85% Waiver" typed next to the checked Box A, but no other pages are included, nor is the Explanation Statement, so I assume this is what TurboTax sends to the IRS. (Note that, after digging through the IRS instructions for Form 2210, I concluded that this does appear to be the correct way to complete the form.) I filed my return, and there was no longer any error from the IRS requesting I attach the waiver explanation or anything else. Instead, it was accepted very quickly, so it looks like the problem has been fixed with no "fudging" of the TurboTax program required!
