This can’t be all down to one man.
In 2003 the first super spreader was a fishmonger called Zhou Zuofen. He infected 30 doctors and nurses at the hospital he was admitted to.
One of these was a doctor called Dr Liu Jianlun. He travelled to Hong Kong where he stayed at the Metropolitan hotel. Here 23 other guests caught it. These included Johnny Chen, Kwan Sui-Chu, Esther Mok and another unnamed 27 year old man.
Johnny Chen travelled to Vietnam where he infected 38 members of staff including the SARS whistle-blower Carlo Urbani. (63 infected, 5 dead in Vietnam)
Kwan Sui-Chu travelled to Toronto and her son caught it from her. 251 people were eventually infected in two wave. The first was after her son caused an outbreak at the hospital he was staying at. The second was an accidental exposure amongst patients, visitors and staff at another hospital. (251 cases, 43 deaths in Canada)
Esther Mok and the unnamed 27 year old man were the cause of the outbreak in Singapore. (238 infected, 5 deaths in Singapore)
So in answer to your question can 1 man be the cause of...
... Yes they can.