User blog comment:Go Gwenny/Ben 10,000 returns, your thoughts?/@comment-24.128.191.91-20120502015044

Doubt it. It's pretty well noted that trained humans can use mana, albeit not nearly to the extent that Anodites can.

It's more likely exactly what he said - he picked up a couple tricks from being exposed to Gwen for so long (though the only thing she's taught him in the current setting besides schoolwork is some Karate). His Anodite heritage is still dormant, but his repertoire developed to include tricks akin to what Charmcaster and Hex can use (though perhaps to a lesser extent seeing as how those two are from Legerdomain).