First things first: The UVa neurology residency program is NOT on probation, but the hospital GME program is on probation. The neurology program is still a fully accredited residency program.
The neurology program was reviewed and passed ACGME inspection, however site review for the GME found some noncompliance issues (mainly internal review of residency programs, maybe some work-week hour violations outside of the neurology program etc). Since the probation was implemented, UVa has been revisited and is awaiting a reversal of the probation.
Initial feedback after the ACGME revisit was very positive, and the whole probation issue should soon be a thing of the past (like at other hospitals, JHU for instance??) If for the some reason the probation stands, then a another revisit will occur per ACGME practices (The first revisit was at the request of UVa and well ahead of the usual ACGME timeline). If the necessary changes have not been made, then UVa hospital could lose accreditation and ALL the residency programs (remember neurology was not singled out) will be training at a non-accredited facility. This is unlikely to happen, but still a possibility.
BTW, UVa rejection letters are more pithy than that. Good luck.