I'm just going to copy my post from the Discord, since it seems to cover most of this. As far as I remember, the condition of being torn only exists for at most the duration of the interaction, though stretching is semi-permanent.
In version 1.7, you can use the Constants mod to easily and safely adjust many settings for Aric's mod. There are many parts to the stretching system; the ones related to your request are tearing and stretching. Tearing is when the person's stretching becomes unpleasant; Stretching is the chance to permanently increase in size. Stretching can effectively be disabled by reducing the chance to well below zero(it's a base chance not a multiplier, so there are other factors). The option names start with "stretchchance".
Unfortunately, tearing cannot be easily disabled. There are options for auto-recovery like "tornvagautorecovery", but this just means that it heals during the next orgasm. In order to disable tearing, you would need to edit the script newsexsystem.gd. If you change the mod file, then you must re-apply. If you change the game file, then it will vanish whenever you apply mods. Any text editor will do, but decent ones will make it easier.
if difference >= 5 + rand_range(-5,0) + person.sexexpanded.pliability:
This line can be found twice in the file, when true the person can tear. Thus to disable tearing we simply need to ensure that it is always false. This can be achieved by a simple change like this:
if difference - 1000 >= 5 + rand_range(-5,0) + person.sexexpanded.pliability: