Police seized the helmet-cam video and questioned the motorcyclist who shot it.
They arrested Cruz, 28, the biker who abruptly slowed in front of the Range Rover. He is charged with misdemeanors including reckless driving. Cruz was later released after posting $1,500 cash bail and a $15,000 insurance bond. His license was suspended, and he was ordered to surrender his passport.
Cruz's lawyer insisted he is not guilty.
"His motorcycle was struck, and he stood right there," his attorney H. Benjamin Perez said. "He never assaulted this man. He never tried to assault him in any way. And he does not know any of the other motorcyclists who were involved in this beating."
A second biker, who was in custody, was released Wednesday, when authorities determined that he may have been trying to help.
The NYPD released photos Sunday of two other men they want to find and question as part of the investigation and asked for the public's help in identifying them.
Mieses' family, meanwhile, says he is the real victim. "All of his ribs are fractured. His lungs are so badly bruised that he's still on a ventilator," Yolanda Santiago, his mother, told CNN affiliate WCBS.
Mieses' wife, Dayana, told CNN affiliate WBZ that he got off his bike to help the SUV driver. She blamed Lien. "He got scared; he peeled off, and he paralyzed my husband on the way," she said.
'We could not have done anything differently'
Lien was treated at a hospital for slashes to his face.
"My husband was forced under the circumstances to take the actions that he did in order to protect the lives of our entire family," his wife said.
"We know in our hearts that we could not have done anything differently, and we believe that anyone faced with this sort of grave danger would have taken the same course of action in order to protect their family."
It was Lien's wife who made the last of three 911 calls the family placed during the incident.
Bikers have called for Lien to be charged.
"That wasn't fear, that was aggression -- he ran over three bikes," a man who identified himself as Jose told reporters Thursday night. "Are we saying, if you feel nervous you can kill somebody? You can paralyze somebody? I think we need to charge him immediately."
Angry netizens have turned on the bikers, casting them in a bad light.
One biker called for cool heads to prevail.
"We are not here to blame anyone, we are not here to point any fingers," Albert Elkerson said. "The true question is how could we have avoided what happened last Sunday, and what can we do to prevent that."