PUSH the hood release handle back into place and try to close hood... Spray the hood latch liberally with WD-40. DO NOT attempt to drive vehicle until hood is securely fastened *in some manner* .. Should have hood latch 'professionally' repaired ASAP!
RepairPal Certified shops can diagnose and repair your 2003 Mitsubishi Diamante. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.