Moments before the crash at the Ynyswen Industrial Estate, Treorchy, his back seat passenger, Daniel Thorne, clipped on his seatbelt after pleading with DeMaid to slow down.
Mike Hammett, defending DeMaid, said there were no concerns about his driving apart from the speed.
Mr Hammett said it would be "cruel" to send DeMaid, whose father was buried the day before sentence, into immediate custody.
Judge Richard Twomlow gave him an eight-month custodial sentence, suspended for 12 months, and ordered DeMaid to carry out 160 hours' unpaid work.
Stretchers were brought on to the field and swift medical advice was given before deMaid
was carried off the ground with both a dislocated knee and a broken knee cap.
Despite losing some major clients in recent years, including Panasonic in Cardiff, Mr Demaid says he is confident of the future success of the business.
Mr Demaid said, "A lot of work has been going abroad lately but you have to keep battling on.
Mr Demaid founded the business after being made redundant by Alar engineering, based on the same site.
Mr Demaid said, "We are very optimistic and flexible about what we can do now and in the future.
Mr DeMaid says the original arrests, trial and subsequent convictions deeply affected all of those originally accused.
Mr DeMaid, who was one of the most vociferous voices in calling for a new investigation into the murder, also praised South Wales Police for having the courage to do so.
Responding to the statement, John Charles Rees QC, who represented Gafoor and also acted for John Actie in 1990, and Yusef Abdullahi's solicitor Bernard DeMaid
, said: ``What remains thoroughly unsatisfactory is the attitude of the South Wales police to the 1988 investigation.