Wrongful dismissal and summary dismissal: Law problem style question

"Flighty works for Bossman an Co. as a sales assistant. Although the quality of his work has been satisfactory, he has a rather quick temper and is given to disagreeable behaviour. One morning, Flighty was asked by the store manager to help another colleague to stock the drinks shelf. He replied, 'Two fingers to your drinks shelf, and that goes for you too!" He then stormed off, pushing ast a customer. Bossman's general manager, hearing …

…Ch 305 Laws v London Chronicle (Indicator Newspapers) Ltd. (1959) 2 All ER 285, (1959) 1 WLR 698 Lewis Shops Group v Wiggins (1973) UCR 335 or 1973 IRLR 205 London Transport Executive v Clarke (1981) ICR 355 Court of Appeal Malik v Bank of Credit and Commerce International (1997) IRLR 462 Ottoman Bank v Chakarian (1930) AC 277 Pepper v Webb (1969) 1 WLR 514; (1969) 2 ER 216 RE Rubel Bronze & Metal Co. (1918) 1 KB 315 Tanner v Kean (1978) IRLR 160 Warren v Henlys Ltd. (1948) 2 All ER 935 Wilson v Pringle (1987) QB 237 Wilson v Racher (1974) IRLR 1141, (1974) ICR 428, (1974) 16 KIR 212