You're off on the context of "Cos this is not ninety-three". Its not about being dropped in '93.It's Derek Kickett
Its about the accusations in the preceding lines occuring at a "now" rather than back in '93.
Its not '93 now. You're no longer a sporting hero that people will make excuses for.
And then alone in his house
He wants to take baby out
Give us a smile
Boy if you touch her again
I'll tell your wife and your kids
About that time
Cos this is not ninety-three
You lost your spot on the team
You're out of line