Not that I'm aware of, but he was under particularly close scrutiny by the public at the time, too, and thus might have been afraid he would get caught:
"Family of security guard in Danielle Stislicki's missing case says evidence 'is troubling'"
POSTED: FEB 23 2017 11:34PM EST
UPDATED: FEB 24 2017 09:35AM EST
"BERKLEY, Mich. (WJBK) - Danielle Stislicki has been missing for nearly three months now, and there has still been no sign of her. One local woman, though, says police say her brother-in-law was seen with Stislicki on December 2, the day she disappeared.
'It's not looking good, it's just not,' says Elizabeth Newton. '[Danielle's] still missing and he's still not said any bit of truth to the police.'" (BBM)
http://www.fox2detroit.com/news/local-news/237785492-story
"Sister-in-law of man whose Berkley home searched in Danielle Stislicki case speaks out"
POSTED: 02/24/17, 12:18 PM EST | UPDATED: ON 02/24/2017
"Newton said shes been sharing the Facebook page 'SEEK TRUTH!! FIND DANIELLE!!' and
has helped organize a walk this weekend in Royal Oak intended to ask anyone who knows anything about the case to come forward.
Newton is calling the event 'The Walk for Truth,' and has scheduled for the walk to begin at 1 p.m. at Jane Addams Elementary School at 2222 W. Webster Road." (BBM)
http://www.theoaklandpress.com/gene...earched-in-danielle-stislicki-case-speaks-out
Or just as likely, he did do something in March, but any DNA evidence that might have been collected hasn't come back from the lab yet (his current charges stem from an incident that took place six months prior). Or -although less likely- he did something even more heinous, like what he probably has done to Danielle, and hasn't been caught yet.
I usually don't like to assume or speculate, but I do feel confident that Galloway's DNA was recovered after the attack in September, and when the results came back and the information was entered into CODIS, it matched his DNA profile that had been collected -hopefully from his house in Berkely during one of the searches- and entered into the system (or maybe DNA from the Sep. incident was in the system first, followed by DNA collected as part of the investigation into Danielle's disappearance).
I really don't think LE would arrest someone for charges of this magnitude based solely on a sketch and/or maybe a lineup ID by the victim, especially in this day and age.