Sometimes you need to remove an RBD from a sim completely. Eg, you're using a block to push something and then need it to get out of the way...
Make sure you have a group for it on SOP level. It will probably be a point group, as you're most likely using packed geo.
Now use a SOP solver in your DOP network. Attach it to a multisolver, alongside your Bullet/RBD solver..
Inside the SOP solver, blast the group that you created earlier. Use a switch node or some other timing device (you could use a point wrangle with removepoint I think) to trigger the group's deletion.
Eg. Switch node could use $F>1000. Here it will switch from "all the geo" to "all the geo minus the group" input.