That would surprise me.  The Freeze option is a client UI feature, it shows the then current trace and stops updating with new upcoming traces, until you Unfreeze it.

Not sure what the Active Switch metric does, it is something specific for that driver, not a common thing that applies to all spectrum analyzers (such as start and stop frequency, RBW, video bandwidth, etc.).  So this even makes it harder to believe that somehow it may impact that generic Freeze function.

Not sure what the Active Switch is, did you double click on it to see if it has a detailed parameter description that can provide a bit more clarity?  It sounds like the analyzer may have a build in RF switch, with multiple inputs, and this indicates which one is selected.  In that sense it could be linked to Measurement Points (which is the standard way to control multiple inputs via RF switches, also supporting third party RF switches external from the spectrum analyzer).   If the Measurement Points of the analyzer element are somehow linked to this, then for every trace requested, this input would be selected.  This could maybe cause that Active Switch to be set to 1 continuously when the Spectrum element in DataMiner wants to take a new sweep (which causes you to think that you cannot change it - i.e. the analyzer element sets it continuously to 1 because that's associated with the measurement point that it wants).  And if you freeze the analyzer, then it stops taking sweeps, and hence stops setting it to 1, and hence allowing you to control it.  Just a guess.