More than a decade ago, David Bowie’s everlasting search for left-of-center found fresh fodder, courtesy of Floyd Vivino. The Glen Rock native’s low-budget, quirky children’s program “The Uncle Floyd Show” was the source of inspiration for Bowie’s track “Slip Away,” released on 2002’s “Heathen.” Bowie was turned on to the local cable show during its late-’70s…