You stated "I don't know any cases where a RIC that has been imposed at crown court has been reversed and the charges dropped or a person has been granted bail until the start of the trial proper." I pointed out an example from last month.   

Facebook case sentencing
The maximum sentence is six months -

"s.127:(3) A person guilty of an offence under this section shall be liable, on summary conviction, to imprisonment for a term not exceeding six months or to a fine not exceeding level 5 on the standard scale, or to both."

Furthermore, the chairman of the bench stated that Wood's received a reduction for the early guilty plea.