Honestly, I'd probably kludge this one if possible.
See if you can add an optional flag as a parameter to the proc to indicate that the first result set is not to be returned, only the second. Then you can capture the output from the proc directly into a temp table, for example, since it will then be only one result set.
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".