"(b) if the holder of the contract has, upon a finding by the Compliance Committee under section 50(6), having regard to the investigation concerned under that section, failed on one or more occasions to comply with a term or condition of the contract or caused interference referred to in section 50(2)(b) and the nature of that failure or interference, as the case may be, is of such seriousness as, in the opinion of the Compliance Committee, warrants the termination or suspension of the contract,".