This yeast strain for me always goes down to 1.004 - 1.006 for me. If the mash had any effect I would imagine your overall efficiency would be high, such that your OG would be increased. Hope this helps. Love this yeast though, used it for 4 or 5 brew so far this summer since it's been so hot.
Just made a variant similar to this one, but wow, this has to be one of the better beers I've made. I used WLP810 cause I couldn't ferment below 60F. But it still turned out great full body, and with a wonderful hop aroma and a light citrus taste from this hops too.
Yeah I agree with this cause I tried a Schneider Weiss last Christmas and it was all banana flavored as you experienced and it fermented around 70 to 72 (my roommates enjoyed a hot apartment unfortunately), but I'm going to give it a try here this weekend and fermenting at 60 - 64.