The year is wrong, this is about events in Kurland in January 1945. The story of a Danish machine gunner seizing a Russian, and bringing him back to German lines for interrogation, is found in Tieke's Tragedy book (page 200 of the English edition).
Two pages later, it is mentioned that more than 40 Soviet tanks assaulted German positions on January 23. Ten were knocked out in front of 6./Danmark, with one Danish grenadier credited with six of the kills, accomplished with Panzerfauste.
I don't know the identity of these men, but I expect that Tieke wouldn't have mentioned these things if he didn't think they were true.