Planet13 - 4:43 pm on Jul 22, 2013 (gmt 0) [edited by: Robert_Charlton at 7:19 pm (utc) on Jul 22, 2013]
I don't think I would be afraid to use the disavow tool in your case. You have a clean site so even if it triggered some kind of an audit, you would have nothing to worry about, correct?
And, from what has been stated, the disavow tool is automatic and won't ipso facto trigger a manual look at your site, or flag it as suspicious - from what we know.
On the other hand, someone at google IS looking at SOME of the disavow files that have been submitted, since Matt Cutts knows enough about them to list the common errors with disavow files (such as improper formating and failure to use the domain: tool when an unnatural links appears on more that one page on the same site).
[edit reason] Please read forum Charter [/edit]
[edited by: Robert_Charlton at 7:19 pm (utc) on Jul 22, 2013]