Asapuppy,
It doesn't have to be sole-source for you to benefit from ASAP. Here's my understanding of how it works (at ASA at least):
If it is a sole-source incident, if it is accepted into the ASAP program (meaning nothing intentional or criminal), then the absolute worst case scenario is you get an electronic response closing out the matter (which is essentially the same as it never happened).
If it's a non-sole-source incident that's your fault (the FAA gets wind of it some other way), then without ASAP the worst case scenario is you get a violation in your file, possibly accompanied by a suspension or revocation of your certificate. The best case scenario would be a letter of warning in your file.
With ASAP in a non-sole-source incident that's your fault, the best case scenario is an electronic response (it goes away); worst case scenario is you get a warning letter (which is not a violation, and it drops out of your file after two years). So you can see that if there's ANY chance of the FAA finding something out (which is always the case), then you are always better off with ASAP. You can't lose.
(Somebody please correct me if my understanding is flawed).