Weirdest Knee Injury Ever just before AAA

So at 2 o'clock this morning I'm lying on the couch, on my back, not moving.  Suddenly it feels as though my lower leg is being dislocated at the knee.  I yell in pain and it stops.  I think my calf muscle had a spasm and was pulling the bone down and almost out of the socket - crazy!  After a few minutes it was sore but not bad.  This morning I tried to jog on it since after stretching and walking there was zero soreness and no sign of injury.  After a half mile the soreness suddenly re-appeared and was scary and I had to stop and walk back to my car.  I then massaged with CPD.  A couple of hours later - no soreness nor limp in my walk.

My sprint tri is in 8 days - my AAA race I've been training for a long time.  I was doing 40s/20s cycling intervals yesterday afternoon and my calves were a bit sore afterwards but it was only a half hour workout so I consider yesterday as the first day of my taper (though I had an 1,000 yd swim w intervals in the morning).  Overtraining again?  I am 63.  No knee injuries in my history.

Do I not run until race day so it has the best chance of healing?

My schedule has a swim tomorrow and bike on Sunday - should I skip those too?

Major concern and disappointment.