The agency said Lack failed to notify the judge and the district attorney when Serenity needed medical treatment for black eyes and a swollen face the second time she was injured in January.
The agency said Lack failed to report to a judge that Serenity had reacted negatively to hearing her father's name while in foster care. Both of Serenity's foster mothers had reported this concern, according to the termination records.
Lack and Shawn have hired an attorney, Pete Serrata, to appeal their firings.
Serrata on Tuesday again criticized DHS, saying the agency did an incomplete and haphazard investigation into what happened in Serenity's case. Lack last week said he was personally invested in his cases.
“When you go home at night you still think about those kids,” he said then. “It's the first time in my life I've ever been fired. ... I've always done a good job in whatever capacity I've worked. Now, at this late stage in life, having to start all over again, it's a pretty scary thing.”