ok, that circuit looks like a typical step-up inverter ... ac
power is converted to DC
, and then back into high frequency high voltage AC
the $1000 question is - what's inside the base end of the bulb?
the quicktronic ballast logan mentioned would be your best bet for driving the bulb assuming it's able to be driven in that manner, but to err on the side of caution, you really should try to open the bottom of the bulb up and see what's inside.
a fulham workhorse, or any other commerical / industrial ballast can not be disassembled. the ballast electronics and transformer(s) are mounted on a circuit board and then packed in a asphalt / tar mixture before being sealed into their little metal box. this keeps water out and helps dissipate heat, but it also means no tinkering or fixing.