I think it's worded wrong then. The side of the defense that has more players should not be called the weak side. Unless they're only using a TE as strong/weak designation and the "Sam" LB (which we know doesn't exist in NCAA/Madden) is said to be on the strong side. So the extra Safety (nickel back positon) is on the opposite side of the Sam, making it a "weak" blitz.
I dont know.