I couldn't find *any* info for a Viper 522. Are you sure that is the model
number?
The Viper models that I'm familiar with use a heavy gauge relay harness for
the remote start. The factory ignition circuit isn't normally bypassed when
installing this harness. That way if the remote start circuit fails the
vehicle will still start with the key. The starter disable circuit (if
installed) only grounds the starter motor, not the ignition so that isn't
your problem either. The wiring on the remote start relay harness is only a
couple of feet long so it's probably hooked up directly to the ignition
switch harness inside the steering column. Remove the steering column trim
panel and inspect the wiring there. Make sure the factory dark blue wire and
the black wire aren't cut or damaged. Those are the ignition wires. I'm not
sure if both of those wires are supposed to be hot during cranking, but if
you don't have voltage on at least one of those wires with the key in the
crank position, the ignition switch is bad. I hope this helps.

This is a list of what the factory ignition switch harness wire colors
/should/ be.
Constant 12V+ ~ Pink/Black
Starter ~ Yellow
Ignition ~ Dark Blue
Ignition 2 ~ Black
Accessory ~ Black/Orange