I believe the sensor in the passenger seat is only to DISENGAGE the side impact airbag if weight is sensed against the side bolster.
My concern would be not knowing the circuit schematic and electrical properties of that sensor. It is possible that with the sensor disconnected, that absence of the sensor's signal would disable the side airbag. The front airbags should deploy as normal (if the impact sensors deem necessary).
::Extended Rant::
Possibly off topic, but frankly it pisses me off to see some accident victims try to sue the auto manufacture because "all" the airbags did not deploy. A former friend of mine ran his TSX off the road with his wife in the passenger seat. She wasn't wearing her seatbelt (as usual), and was thrown into the floorboard. Her front airbag deployed, but the side did not. (Frontal impact in to a tree) She had multiple fractures of her jaw, and spent 3 months eating through a straw. They acquired a lawyer, and sued Acura of America, only to lose the suit. Now, I'm not sticking up for the 'big company', but I feel suing because of this was an over zealous act of ignorance on their part and was done only to cast animadversions at the mfg, all to redirect the fault away from themselves. ::End Rant::
If you read all that, thank you for letting me get that off my chest. And to the OP, I'm not directing this at you. Only making a point on the topic of Airbag operation.