Johnalex - I think your WEASEL is right but if so the clue-writer is at fault: I don't see how 'wild' in a clue can indicate a W, as it isn't a standard abbreviation.
Hi Quizmonkey - You're absolutely right about these single letter clues. I've never liked them as they display a total lack of imagination on the part of the compiler and in this particular case I would call Foul! 'Western support' would have been better. Anyway, 'Weasel' it has to be (?E?S?L). Cheers, ja.