No need to pull engine. Drop pan and pump then have pick-up welded on. If it did fall off you would probably notice it during hard cornering as well. If it drop the pick-up you will want to at least check #1 main bearing/crank for damage. It goes dry first ............

I had this happen a long time ago. Scored the crank a tad at #1. Put new bearing on and slapped it back together and ran fine ..........

Kitz