The effects of restraint should not stack, is what I agree with as well, [@Hekazu]. I also believe it is [i]probably[/i] the intent that the individual instances stack as well but not the penalties obviously based on what we do know. The other issue is though, is that these came from two different sources per se as [@Lucius Cypher] points out. It makes no sense for them to not stack although it does make no sense for them to stack in its own way since the penalties do not stack.

As I see it, "Restrained" as a condition only applies once, yet the stacks of the glue all still keep applying it. So for each glue effect, it keeps the restraining in order, requiring each of those to be broken. Again, not favorable in this case, but it has the consequence of seeming to be what I imagine they intended?