The FIA can force through the EBD ban for 2012, if they wish.
The FIA can't just force it really, they should consult the F1 commission and working groups beforehand.
2.2 Amendments to the regulations : Changes to these regulations may only be made in accordance with the provisions of The 2009 Concorde Agreement.
Moreover, some may argue for postponement on the basis of this:
b) Technical design of the vehicle
(i) Changes to technical regulations or to Appendix J, adopted by the FIA, will be published no later than 30 June each year and come into effect no earlier than 1 January of the year following their publication, unless the FIA considers that the changes in question are likely to have a substantial impact on the technical design of the vehicle and/or the balance of performance between the cars, in which case they will come into effect no earlier than 1 January of the second year following their publication.
PS Their current proposal for 2012 creates some significant issues - packing of the exhaust, blowing near the cars centre line and close to the gearbox and hydraulics, long secondary pipes etc. Not to mention the exhaust flow in the wake of the front tyres of a following car..
Edited by Iridescent, 16 June 2011 - 14:02.