You can easily stop the script. In the main function, for your repeat loop it should look something like...
repeat
--stuff
Wait(0)
until not Alive
so instead of "until not Alive" do "until Script1Terminated"
Script1Terminated would be a variable that can equal true or false. In the setup of your script, assign it to false. Script1Terminated = false. then when you want to end the script, make it equal true. (Script1Terminated = true)
name it Script2Terminated, Script3Terminated, and so forth. or whatever you want to name it. dosent really matter.