It looks like the Ultimate Guide Book released in the UK a while back actually already revealed the name of Trixie's dad. Buried within it's pages is the small blurb up above. While Director Big Jim Miller has only hinted at it so far, and the episode itself never made any direct references to Trixie, I think this kinda seals the deal.
Will we ever see this go any further? We've already met her mother via the MLP comics. It's fun to see this finally come full circle, if a little random!
