Trindall pleaded guilty on Tuesday in Sutherland Court to mid-range drink driving and driving with an illicit substance in his system. He received a $1,100 fine and a three-month suspension from driving.
Hynes' secondment to NSW State of Origin camp opened up a spot in the halves for Trindall this week after the playmaker impressed on his return to training from a leave of absence.
Trindall will partner five-eighth Daniel Atkinson in the halves for the round-13 clash against Parramatta, who welcome their two most important players Mitch Moses and Clint Gutherson back from injury this Thursday.
The game will be Trindall's first since starring in Cronulla's 42-6 rout of North Queensland in round seven.
"(Trindall) knows he let us down a little bit and he'll be looking to show us that he means something to us and the club means something to him," said Sharks halfback Hynes.
"He's been looking good at training, he's working hard. I think he's trying to put a bit more muscle on, he's working hard in the gym, he's looking great, his energy's back so it would be a massive, massive boost if he could play for us on Thursday night."
Moses has not appeared for the Eels since fracturing his foot in the round-three loss to Manly in March.
The Eels have won only one of eight games since their influential halfback went down and sacked coach Brad Arthur in that span.
Gutherson's return from a four-week knee injury lay-off has pushed boom rookie Blaize Talagi from fullback and onto the bench for the Eels' second game under interim coach Trent Barrett.
The Sharks also have Toby Rudolf back on deck following his knee injury.
Sydney Roosters veteran Michael Jennings has recovered from a triceps injury and will start from the bench against North Queensland for his fifth appearance in a controversial comeback season.
Tom Chester returns from a hamstring injury to strengthen the Origin-hit Cowboys, with Braidon Burns, Harrison Edwards, Jake Clifford, Jamal Shibasaki and Jake Granville all added to the 17.
Preston Riki and Trent Toelau will make their NRL debuts for Penrith, who have lost five players to State of Origin duty ahead of the clash against St George Illawarra.
Toby and Ryan Couchman and Mat and Max Feagai join the Dragons' 17 to cover for the joint venture's own Origin absentees and last week's injuries to Hame Sele and Jack Bird. Jesse Marschke replaces Ben Hunt in the halves.
Late bloomer Trai Fuller will play fullback for the Dolphins, who have lost Hamiso Tabuai-Fidow to Origin duty ahead of the clash with Canberra.
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