I appreciate the accept and generous bonus. No need to accept each answer as unless you have a subscription through JA it will charge you each time.
You can have a summary offense expunged but the law in Pennsylvania requires that you wait five years after conviction (and stay out of trouble during that time) before applying for an expungement.
Most employers do not use a PI to do a background check, and as I said, it wouldn't show up in a typical state or national check. I can see having it expunged for peace of mind, just so you know it's done. To be honest, I am reading different things on different Pennsylvania lawyer websites -some saying that the record will show up in a background check from the Pennsylvania State Police, others saying it absolutely never does.
It should be noted that it may be improper for employers or licensing agencies to deny applicants a job on the basis of summary offense convictions, anyway. See 18 Pa. C.S. 9124 and 9125.
What I would encourage you to do is consult with a criminal defense attorney (even if you decide not to hire them, many of them do offer low cost or possibly even free consultations). They can tell you for certain whether this is a misdemeanor or summary offense (though my money is on summary offense), and what you are looking at, and what, if anything, they can do for you. Prepaid Legal Services is a service that I believe you have to sign up for and pay monthly, then if you have legal needs in the future, you can go to them and they pay a portion. It's sort of like having a legal service on retainer. Not sure if it's worth paying for the service if you only plan to use the lawyer one time -especially if all you may be looking for is a consultation. I would use the Lawyer Referral Service from the Pennsylvania Bar and make some calls that way.
By the way, (since I just realized I forgot to answer this part) If the officer didn't write specific details of what occurred on the citation itself, I don't see how an employer or anyone else would find those details out. IF this shows up on a background check, all they would see is the summary offense for disorderly conduct and the disposition of the case, not the details.
In answer to your last question, this is a public forum, so it is accessible to anyone on the internet, but your user ID is a generic series of numbers and letters, and you haven't stated anything that identifies you. If you prefer, just reply and let me know you are done with this conversation, however, and I will ask that customer service please LOCK this question.