Dost was apparently awesome but then got injured and has been out for ages iirc. Came back and as you say, has been mental since then. FInished 5-3, I think, was paying attention to other things. 3 goals in the first 10 mins or so of the second half then chances but no more goals.
Wolsburg have been scoring a lot lately, only scored 10 less than Bayern, conceded 17 more though. 8 points behind is a fantastic performance. With Dortmund looking somewhat back to their best and from recollection have two bottom half games before facing Bayern. If they could win those and take some serious form into that game, win it even, Wolfsburg have a slim chance of catching up and putting them under pressure.
Wolfsburg have been incredibly entertaining to watch this season. Bendtner is pretty screwed though, he actually did look decent for them and scored some goals but then picked up an injury, missed 2 months maybe and he got fit just as Dost came back and went crazy so he's getting very little game time at the moment.