I have not considered using an angle grinder to break down pallets. I have a couple of angle grinders so it would be no big deal to pick up a cutting disc like you posted.

I am familiar with using a circular saw to cut the planks off the 2X4 stretchers. I am familiar with using a demolition blade to cut off the nails in the planks to remove them. In what way(s) do you use the angle grinder to breakdown your pallets? I'm all for exploring new ways to disassemble pallets.

A big concern of mine would be actually using the angle grinder. It was drilled into my head that the angle grinder is one of the most dangerous tools in the shop because of the very high spinning speed of the disc. Also, there is a higher chance of kick back with an angle grinder compared to the reciprocating or circular saw. Would you please address any safety concerns you might have using an angle grinder to breakdown your pallets? Thanks.