I am applying for Masters programs in the USA. Most programs require the applicant to waive their right to see their letters of recommendation, and the applicant is not supposed to ever see their LOR.
One of the profs who is writing letters for me accidentally sent me a copy of my LOR today. He was supposed to send me a copy of a letter granting me permission to use certain hardware in a lab, but accidentally sent me the wrong letter. I suspect that he had both saved in the same directory on his computer, and simply chose the wrong one.
The issue is that he has already sent this letter to some colleges. What is the correct thing to do in this situation?