No, this is an expert whose work has been (let's be generous) "misinterpreted" to support a serious criminal conviction, and who is concerned it may have contributed to a miscarriage of justice. He disagrees that what was described in court is supported by his paper. He didn't weigh in at the rime as he was unaware of the papers use in proceedings until after the event.
Regardless of other evidence in the case, he is right to challenge misuse of his own research in a court setting as it leads to issues of precedence in potential future cases, and ergo, potential further wrongful convictions.
See Kempe, metaphyseal fractures, and "battered child syndrome", also "shaken baby syndrome" and "MSBP / FII" for other instances of the medical world colliding dangerously with the legal world with disastrous results for thousands of accused parents and caregivers over the last half century or so.