It is impossible for the pressure to reach 60 PSI so it sounds more like a bad gauge. For some gauges, the maximum PSI is actually 30 PSI. Are you sure that it is hitting 60 PSI? If so, replace the gauge because it is not reading correctly.

When I cut over to the main pool drain, no water pulls through into the pump. You can see there is no water in the filter cover and the pump starts making loud noise. When I cut back over to skimmer basket, it corrects.
That means there is a blockage in the main drain line. Are you sure there isn't a plugged somewhere.