2913 GSA oil cooled camhead. I'm on a ride from the US to Ushuaia with side trip through Brasil. Had service done in Sao Paulo and asked to check the valve shims etc ... they pulled a plug to rotate rear tire in gear to find TDC and check the shims etc as is SOP. I had replaced the plugs myself just a month ago and still have receipt. I ordered all four at the same time and was careful not to crossthread etc. Fastforward a week. Bike was pinging under load in 6th. Like gravel was in the motor. Finally it lost about 80 % power. I limped it to the nearest hotel (with a stop to drain gas and out and add new just in case that was it). Been stranded here at this hotel in the middle of nowhere on the Brasil and Argentina border ever since ... I decided to pull the plugs on one side and rotate the rear tire in gear to check for compression as I was thinking I cooked an exhaust valve. The damned plug was seized. I was kicking myself for not putting anti seize, or the mechanic not doing it. I got penetrating oil, let it sit overnight and came back in the morning thinking maybe it was cross threaded. I got the plug out and it's ... melted at the end and the electrodes are crushed in. Damned. The other three plugs came out easy ... but ... then I noticed the damaged plug was maybe five mm longer !! Different part number than the other three! It was contacting the Piston and I'm sure I burned a hole in the Piston which is why I lost compression ... the mechanic must have grabbed another plug and popped it in when checking valves, maybe there were a couple on his work bench and he grabbed the wrong one. Crap. It is 350 miles to Rosario Argentina where there is an official BMW dealer. Been a week and can't get a truck or a tow yet. Question is this: if I unplug the wires from the primary and secondary coils, keep the coils and plugs out ... can I ride it to Rosario on the good cylinder? I know it will run like shit, but will I do more damage than has already been done? Say if there is metal debris from the burned piston etc? I will need a new piston anyways I'm sure ... I hope valves are ok. Bike has 30K miles now. I think the cylinder walls are pretty strong but ... I don't want to worsen it ... I dunno. What do you guys think. In desperate situation here .