Since I never read introductions first, I only just looked at the preface to Dunning and Bliss' edition of The Wanderer just last night, after reading the poem five or six times back to back. At the end of the first paragraph (vii) appears the following sentence:
If we appear to have singled out Dr. Leslie rather often for disagreement, this is because his [edition] is usually the most accessible, and often the most able, defence of interpretations which we find unacceptable.
Well alrighty then. That in turn made me think of this passage from another source:
This was unexpected and rather difficult. There was some scattered clapping, but most of them were trying to work it out and see if it came to a compliment.
The Wanderer, T. P Dunning & A. J. Bliss edd., Methuen 1969.