Strained Glute Medius and Minimus

I was recently doing deadlift, and on a moderately heavy set, I heard what sounded like knuckles cracking, and I felt my glute medius and minumus region seize up. The pain was so intense I barely could walk. I iced, rolled, and tenderly stretched it. the top part of one glute and lower hip feel tender and tight, now.

Has anybody had this kind of thing happen before? How long did you wait to test it? Can anybody save me a visit to the physical therapist and venture a guess what it might have been?