In a medium bowl, whisk together olive oil, brown sugar, lemon juice, mustard and Worcestershire sauce until well blended. Set aside.
For the Salad:
Coat the sides and bottom of a large wooden bowl with garlic, then discard garlic piece. (If you don’t have a wooden bowl, mince the garlic clove and add it to the salad mixture.) Add spinach, crisp bacon, eggs, salt and pepper to the bowl. Drizzle dressing AROUND THE SIDES OF THE BOWL (so spinach doesn't get soggy) then gently mix. Serve on chilled salad plates and top with egg and spinach for garnish.