In May 2006 his one-year ban was lifted after he showed remorse and a desire to play for Fiji. In his return match, he scored a try as Fiji lost to the Junior All Blacks, 35–17 in Suva. Later, in a mid-year Test against Six Nations participant Italy, he scored one of Fiji's four tries in a 29–18 win. When Caucau failed to arrive in France for Agen's preseason training camp in July 2006, it was widely rumoured that he had yet again displayed his past lack of discipline. However, Agen's management confirmed that he had contracted a tropical virus in Fiji and had been hospitalised there for several weeks. He was released in August, but lost 12 kg (27 lb) during his illness. Caucaunibuca did not make the return flight to France, as he had been told by his doctor that he could not travel abroad because of his sickness. During his recovery, he witnessed the birth of his daughter. Contrary to reports that he had decided to retire prematurely from rugby, he had also confirmed that he had spoken to his agent, who relayed the message to his Agen Club president that he would join them in the near future. Caucau would eventually be cleared for travel abroad, and would return to France that October. He made his comeback in Agen's first 2006–07 Heineken Cup fixture, a 19–17 home win over Edinburgh. Although he did not score, he was named man of the match.