Can the 02's be shut off with SEPST?

[whetsel.m]

08 FL. Custom map with SEPST. Adding nitrous with a lean shutdown switch hooked up to front 02 sensor. I am going to hook up a pc5 to run another map when activating the nos. Can I shut off the sensors with the SEPST ? The pc5 says to unplug them and plug in a bypass. If I unplug  and bypass them will I still get a reading off of the sensor for my lean shut down switch?

[strokerjlk]

anything other than 14.6 in the AFR table takes it out of closed loop and the sensors are not doing anything,except keeping it from throwing a code.
you would have to use a wideband sensor to control a lean shutdown switch. not the stock narrow band's.

[whetsel.m]

I have a Dyno-Tune LS that says it works with a narrow band sensor.