Not sure what you mean by "pre-inspection" but assuming that was a home or property inspector,keep in mind that they are generalists and not specialists so they refer you to the specialists (e.g., pest control, structural engineers). You didn't copy or describe the crack -- is it vertical, horizontal, the length, width, etc. If there was work done previously, ask for the documents of the prior inspection as well as invoices and information related to what was done and by whom. You may have an opportunity to speak with the previous inspector and the person responsible for the $2K work.
$2,000 of work related to a foundation in a $1,000,000+ home does not seem that significant BUT you may hire a structural engineer to assess the situation. Usually they are about $400-500 for the written report. That should help ascertain if there are lingering issues and any other items that may need attention. Hopefully, you have experienced representation to take you through the process and provide a referral to a experienced structural engineer.