leaf720: I was out on a walk today and noticed that the bushes where I hid the cache have been removed, so it's evidently gone with them. I haven't cached in a while but I know how important it is to take care of this as soon as possible. I would hate for someone to solve the puzzle only to pull up to a nearly empty field.
As for the puzzle: using letters-to-numbers, the numbers corresponding to the given strings in the description (HDJJEA and TDSFHE) are 84101051 and 20419685 respectively. The strings that start at the 84,101,051st and 20,419,685th digits of pi are 4519889 and 07540570 respectively, which can be looked up on a few different pi searching websites. So then you could deduce from those strings that they're the final coordinates (N 45° 19.889', W 075° 40.570'). Basically a kilometre southeast of the posted coordinates. I remember worrying that I had maybe overrated the difficulty, but I don't feel too dissatisfied considering the geocheck results.
Apologies if you were currently working on this or needed a hint and I missed your request due to my inactivity/hiatus, but thanks so much to those who went out of their way to replace the log or cache when it was needed, as well as everyone else who took a stab at the puzzle, successfully or not.