Morgan -
Generally speaking, I'd discourage sending anything to cleaned members
since the fact that they are cleaned means their emails are either
bouncing or they've marked your campaigns as spam.
If you do have a valid use-case for doing this, then just run
listSubscribe with the double_option parameter set to true.
There is not currently a method for setting someone to be in a
"cleaned" status for testing. As far as resubscribing them, though,
it's really no different than simply unsubscribing from a list and
following an the optin process again.
jesse