from my recollection these are 2 separate events and just like every good story contain enough elements of truth to be believable. 
Ben squatted 600lbs and Charlie questioned why he needed to go higher due to increased risk of injury. From what I understand this was completely separate from any races and certainly not linked to a WR.
Ben benched a PR in the week leading into the 1988 100m final where he ran a WR time. This was due to Charlie getting the colours / weights of the plates mixed up.