Yes, it looks like they've made it a verb. It means that they are going to make a concerted or group effort to prove or disprove the claims of the correspondent.
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Mister MicawberYes, it looks like they've made it a verb. It means that they are going to make a concerted or group effort to prove or disprove the claims of the correspondent.English is really flexible... whoof. And you prefer figurative, crisp expressions, seems like. It's great, however baffling sometimes...