The phrase "again because of a" is correct and usable in written English.
It can be used when explaining a repeated action or situation that is due to a specific reason or cause.
Example: "The event was canceled again because of a lack of participants."
Alternatives: "once more due to a" or "repeatedly because of a".
Paterno, 81, watched from the press box again because of a sore hip and right leg.
The game was a lot closer than it should have been, again because of a breakdown on coverage after rebounds.
Jair Jurrjens lost the Braves' first game after the postponements, and never pitched again because of a knee injury.
Shortly before this, the Sydney organisers had been forced to cut their budget once again because of a revenue shortfall.
The health of right fielder Nick Swisher, who did not start again because of a sore knee.
The next time I thought about grilled cheese, it was again because of a visit with friends and their children.
Later that day, his 3 p.m. class was canceled, he said, again because of an evacuation.
A Federal judge ordered the 1996 election to be rerun after Ron Carey's re-election was set aside and he was barred from running again because of an illegal fund-raising scheme that used union money for his campaign.
As the Congressional Budget Office earlier emphasized, even though annual deficits are expected to decline through the decade as the economy recovers, after 2021 they will climb again because of an aging population and high health care costs that are driving up federal spending, especially for Medicare and Medicaid.
On a typical day at the Stadium, Ed Whitson was supposed to pitch but did not; John Montefusco, who was not supposed to pitch ever again because of an injury, pitched brilliantly, and Lou Piniella unleashed his torrid temper at an umpire and was expelled for the first time as the manager.
But the subject of holding a draft for players from the Dominican Republic, Venezuela and other nations has bubbled up once again because of an F.B.I. investigation into whether scouts and major league executives have been pocketing money that was earmarked for Latin prospects.
