If you are going to prepare for the worst and do more than just toss a NASA report, the Richie Lengel book has a nice section on handling this sort of problem. There is a limited time window on things like ordering the ATC tapes, so get the book or one like it, and do what it says immediately. Be that as it may, it sounds like an honest gaff and as long as no major fuss was caused I doubt you'll hear anything/ much more. I get queries from ATC every day "would you go on such-and-such frequency and see if N1234 is there?" They have issues with lost comms in geographically large zones. You'll sleep better if you get ready for a call from the FAA though. Many such instances are followed for purely bureaucratic reasons.