Remove front bumper

My fiat multipla's handbrake got knocked and so rolled into a dwarf wall at a low speed and in doing pushed the radiator back including horizontal bracket. The fan looks OK but will have to replace radiator and possibly front bumper at a later date. How do it bent it back?

The corner of the small wall pushed the radiator back but not to the engine. Damage to coolant pipes(bent) cross member in front of radiator pushed back in a 'V' shape. No air conditioner. Petrol, manual.

I will need to remove the front bumper at some stage so any help here will be greatly appreciated.

I have repaired my cars in the past and cannot afford to have it repaired.

Thanks for your help :-)