Hi,
The Passanger airbag can be disabled.
It will need to be done at your dealer, as they will need to carry out some adaptions to the air bag e.c.u. It may also need a special resistor plug kit to be fitted onto the loom that goes to the airbag, this all comes in a kit which includes a disclaimer form which they will get you to sign, you keep a copy, the dealer keeps a copy and one is sent off to SEAT uk.
Regards,
Jochen.