I couldn't find a fully functional plugin that allowed terrorists to use hostages (or in other words force them to follow) exactly like CT's are able to and especially not one so simple.
Running the command "use_hostage" will effectively change your team and force you to use whatever is in front of you, then switch you back to the terrorist team all within a third of a second.
(it can only be used by terrorists)
Be carefull useing the command, as the team switch could result in accidentally returning the hostages (if you are in the hostage return area) or even your team loseing the round.