I've had great experience with TE service as well - I called once because I was going to buy some tights, but I had no idea how to judge sizing, since the sizes, expecially in the "X" range, are all over the map. But the woman who took my call was very helpful - she grabbed a pair of the shorts I said fit me, then she got the sizes of tights I was thinking of and help then up side by side and told me which size in the tights was the closest to what I needed - and when they came, they were exactly right!
The other thing I do now when ordering from TE (because returns are so easy!) is I buy things in different sizes and try them on (with underwear, of course!) and keep the items that fit.
That said, you could probably sell them on the forum to someone...
Keep calm and carry on...