A couple points. I think that discussion of the Laws, whether they are destructive on intent or intrinsically corrupting and ways in which there is gray area is a fantastic thing. I'd be willing to bet that, insofar as the setting is a "real" place, that these discussions occur with some degree of frequency among wizards who trust one another.
Here is how I conceptualize the in-setting dialog about the Laws. Imagine for a second that I am a psychological researcher (and I am). There are certain codes of conduct and ethical standards that we adhere to when doing research with human subjects because we have deemed that to do otherwise is wrong, whether because it is naturally wrong or because it has the potential to harm other people. However, it is not uncommon for people to get frustrated because these standards can hamper the flow of research. Take, for example, research on children. It is VERY difficult to perform this research because there are HUGE roadblocks based on parental consent, individual consent, potential harm and so on. However, were these blocks not in the way, research could flow unhindered.
I view the Laws (and discussion of them) in much the same way. Like it was mentioned above, not all of the Laws seem intrinsically corrupting. Killing and mind things seem to be intrinsically wrong but only so as it applies to humans. In the research example, it is much easier to perform studies that would be considered wrong, ethically speaking, when applied to people if they were instead applied to animals.
As to the bomb question, I'm going to side with the dissenters and say that a bomb serves one function, and one function only. To kill. Even young people know that bombs kill people. It would be VERY hard to say that even a very young practitioner could reasonably believe that his/her bomb could never be misused or kill unintended targets. Even if it didn't bring down the Lawbreaker stunt (depending on how intrinsically corrupting the Laws are in your world), I would probably say he becomes Target 1 should the Wardens find out about it.