Is there a "temporary root" for Samsung phones?
As others said, if you remove the crapware, well, that proves the rooting.

Anyway, you can try towelroot in order to gain temporary root permissions.


Open the app and tap three times on welcome to towelroot;
A text box should appear: substitute 1 to the last 0;
Click on make it ra1n.


This should provide you with a temporary root.