"tempi are sluggish to say the least"
In comparison to what? The timings are pretty darn normal for the first three movements. He's certainly quicker than Jurowski in the 2nd and 3rd movements. I think that Stenz's M2 is pretty darn decent, but not quite as distinguished as his "DKW" or his M4.
Yes, Stenz does the descending run at the end of the first movement on the slow side, a bit like Rattle. He also sits on the gradual percussion build-up, just before the fast part of the 5th movement's long march section, for a very long time. At the end of the symphony, Stenz does the bell part as written, and the alternating salvos between the three bell pitches, and the upper and low pitched tam-tams, is all pretty audible. The organ is decent but not huge sounding. Good chorus, decent mezzo. I like the slight accellerando that Stenz does at "Ich bin von Gott and will wieder zu Gott - der liebe Gott", in 'Urlicht'. That was a nice touch.
It's hard to evaluate because there's been so many good recordings of the "Resurrection" in recent times. I liked it, but probably no more than Fischer, P. Jarvi or Jurowski.