Wow, don't know if I would be keen to use an angle grinder lol, but it obviously worked for you... Also is sikaflex the only thing you used? understandable to seal it, but i would of thought it stretched too much to hold it up there?
I don't know what aussie_muscle_6 has done, but I have a clubsport roof at home that was done from the factory (dealer option i think), and you can see where they have cut the brace out. It then has brackets from the b pillar going to either side of the sunroof, so between them and the sunroof it must be rigid enough.
yeah i wasnt to keen on the idea of the grinder either but it worked fine and did a very good job the sawing motion of the jigsaw might have caused distortion
there isnt any glue needed to acutally hold it up there, the sunroof drops in from the top with sealer around the lip that sits on top of the roof
then there is another steel ring that goes on from inside the car and the lot is screwed together acting like a clamp holding it all in place
the center brace has to be removed theres no way around it, like you said its done from factory
it is one of the first steps in the instructon that came with my sunroof.
i also made a few other brackets that run from the sun roof steel ring the pillars ect there no really needed, it was soild as before there but i put them on for a extra support
wish i got pics before roof liner went back it.
got my roofliner pretty much finished and back in today more pics tomorrow when it done
cheers guys