JayRob, even though the pic looks no different than the average field, what you don't see is the outfield is in a "sunken place". If rains for more than 20 minutes, the outfield near the fence will be under water. If it rains for more than 35, most of the entire outfield will be a slip-n-slide. And if it's not above 75 degrees, that water ain't dissipating quickly. If you look at an aerial photo, you will see the outfield backs up to a fence. That property overflows onto the outfield.
As far as a "Plan B", the only other stadium in the area with good drainage is LSU......and SU is not about to be allowed to use theirs without a high rental fee.