OK, I think KD has us looking in the right direction here. Steps in the process would be:
1. Dreamingtree tells us that Masterson would have been his choice at #258, instead of Carrasco. (DONE)
2. Knight posts here in the forum the name of his pick to replace Masterson at #264.
3. Dreamingtree and I coordinate when to restart the draft, so that dreamingtree can make the next pick.
4. Dreamingtree also tells me the name of his actual pick for #271 -- i.e., who he would have picked, if we had not had this mess to contend with.
5. I exclude dreamingtree's real #271 from the draft selections available to others.
6. When the draft restarts, dreamingtree selects Knight's pick as #271.
7. Knight trades Masterson to dreamingtree for the guy chosen at #271.
8. The only leftover bit is poor unloved Carrasco, the ugly redheaded stepchild in all of this. If/when somebody wants to draft Carrasco later, then he can select the worst $0.50 pitcher in the list to use as a stand-in -- officially draft that player, but then immediately post in the forum that name as a stand-in for Carrasco.
9. After that, we should each have a beer, as the rain delay ends and the draft continues on again!