No definately no need to take an angle grinder to the car, that would be the wrong thing to do.
Its not that difficult, just be careful when removing the (think 3) bolts in the top of the fuse box they are captive, so as loosened they force the top of the fuse box up, just make sure nothing else is holding the top of the fuse box down, like plastic clips etc. I also now think there is a bolted connection in the corner of the top of the fuse box, undo this first. Of course disconnect the battery before you start.
I may of given you the wrong impression, its not that difficult and if you take your time and are competent their is no risk, had mine off at least twice, first when I replaced the gearbox oil and then when I changed the starter which involved me changing the gearbox oil again. Must have the cleanest gearbox oil out there. Richy