That looks like it could be a glider bomb........ Start high and far, begin a gradual decent, fix on target, gain a little more speed and release the cable. Glider bomb wing design was to maintain the target vector only, no adjustments could be made and wind would ruin the chance of a good drop by most of what the Luftwaffe had left.... Then again........ That could be a fuel tank.
262 bombing was done by the KG 54, but details are so few it is tough to know for sure how they were bombing.
The black tubes are probably R4M rockets, making the photo a 262 A-1a/R-1.