Occasional Oil Pressure Light for 2-3 seconds in my 318. Should I panic?

Its been about a year, but I finally got this fixed. I was procrastinating because I dreaded the idea of getting my car on jack stands, getting on the floor and pulling my oil pan, putting in a new pickup, and doing a good job of sealing the pan. So I finally bought a new pickup and pan seal and brought it to very competent local mechanic who took the the time to listen me spout all the wisdom I'd obtained from FABO.

He made sure the pickup is touching the pan on the bottom, he sealed it perfectly (not even a drip!). Today I took it hard around a bunch or corners and on-ramps. The problem is gone.

Many thanks, especially to @HSDemon, who identified the problem spot-on from the beginning.