I was charged with unlawful neglect if child. Entered plea deal for misdemeanor, making false statement to state agency.

Asked in Columbia, SC - 10 months

I was sentenced to 6 months probation. As I was leaving the courthouse, my lawyer came running down the steps and said I had to go back in court. THey had to change something about my plea. Turns out that in SC, there is no probation code for making a false statement to a state agency. So, in court the second time,the solicitor's office had me withdraw my guilty plea to the misdemeanor and said I would apply for AND be approved for the pre-trial intervention program(PTI). THey've held my app for over a year. Can they go back and reinstate the original felony charge even though I've been to court for the misdemeanor plea deal? Worst case scenario, can I get sentenced more than the first sentence of probation for six months