"A hearing to revoke a defendant's probationary sentence only requires that the evidence be such as to reasonably satisfy the judge in the exercise of his sound discretion that the defendant has willfully violated a valid condition of probation or that the defendant has violated without lawful excuse a valid condition upon which the sentence was suspended. The judge's finding of such a violation, if supported by competent evidence, will not be overturned absent a showing of manifest abuse of discretion. State v. Young, 190 N.C. App. 458, 459, 660 S.E.2d 574, 576 (2008) (citation and quotation marks omitted).