Longtime “Dancing With the Stars” pro Artem Chigvintsev has responded to his soon-to-be ex-wife’s divorce filing. According to court documents obtained by Us Weekly, Chigvintsev filed his divorce response on Friday, September 13. He, like Nikki Garcia, cited irreconcilable differences for the reason for the split. The date of separation is listed as August 29, which is the day that Chigvintsev was arrested on suspicion of domestic violence.