You can either go game specific or if you have multiple games use the multiple games tool. They should have had this in place from the start would have stopped most of the issues.
EA deactivate
De-authorization with the EA De-Authorization Management Tool is a simple two-step process:
(1) Download the EA De-Authorization Management Tool. This tool: (a) scans your computer to determine which EA PC games released after May 2008 with machine authorization limits your computer has been authorized to play; and (b) tells you how many computer authorizations you have available for each detected game.
(2) Download the game-specific de-authorization tool(s) to de-authorize your computer for whichever game(s) you choose. Once de-authorized, a machine "slot" will be freed up and can be re-used on another machine. De-authorization does not uninstall the game, however, so if you decide you want to re-authorize your computer later, all you have to do is re-launch the game.
EA deactivate