A short could possibly damage the 7135 just not as common.
You will need to de-solder the brass bars that hold the PCB’s together in order to take them apart. You will need a hot air gun to do both of them at the same time I am pretty sure.
Worst case you might be able to get a replacement driver from lumintop.
I just tested the GT Micro with the known best 14500 cells on the market. The new Shockli 14500 1000 mah matches the output of the previous king of high current 14500, Windyfire 600mah but with much more capacity. Very impressive. The output with these cells make this light almost as bright as the GT Mini and D1S. The Shockli also beats Sanyo UR14500P by a large margin, which was the previous best overall 14500.
nassagus, check to be sure your emitter isn’t grounding on the negative pad at the MCPCB, a small solder ball from the re-flow can do this. Use a multi-meter to check at the bottom of the MCPCB and the negative pad, if it has continuity you need to re-flow the emitter again.