yeah, the pipe could have filled with gas while it was on it's side, but usually when that happens the cylinder is flooded too. If you're not smelling fuel on the plug, it's not likely but still possible that your exhaust is filled with gas.
you said it's getting good spark, and I assume you're checking spark at the plug, but you didn't get a pop when sprayed starting fluid in the cylinder?
I haven't messed with a vino in years, it has a diaphragm petcock, right? I know you said it's getting fuel, but if your plug is dry and doesn't smell like gas, it's not getting fuel. Make sure the vacuum line that goes from the intake to the petcock hasn't fallen off or been damaged.