With regards to the lane man, this could just be the case of a publicly held company doing what publicly held companies do all the time. Keep expenses as low as possible to please the shareholders. Florida is an at will employment state as well, so Bowlero technically doesn't have to offer a reason for terminating employment. Probably no story here, just that it came during the tournament weekend.
The Purple Hammer is a whole other issue. Some bowlers have known and complained that the ball tends to soften up over time. I am not sure the USBC minimum hardness specification applies to anything other than when the ball is brand new. As long as the test sampling of balls meet spec, they will be USBC approved. Maybe a shipment of balls will magically show up on the USBC's door similar to what happened with the Jackal. Who knows. There have also been unconfirmed rumors that the Purple Hammer is going to be discontinued soon anyway, so it may not be much of an issue in the near future.
The PBA is going to have to decide if they will continue to allow the Purple Hammer to be used in competition. The strangest thing about the current rule is that the balls get checked before the finals, but bowlers can use them during qualifying and match play. Why allow bowlers to use potentially non-compliant equipment to reach the finals? That makes no sense and it kind of validates Sean Rash's grievances [not how he personally handled the situation.] ALL balls should be checked during tournament check in, prior to the start of each new round/after each cut, and again before the finals. Be consistent.