Legal & Practical Aspects of Recruiting

I'm relatively new to the boards and have only recently gotten sucked into the world of college football recruiting.  As a result, I have some very simple questions that I'm helping the board can help me out with.  I've tried searching on the internet, but thus far I haven't found a page that answers my questions.  I'm hoping the folks here could either:

1) Post links that answer my questions; or

2) Kindly answer my questions directly here.

I also don't think my quesitons necessarily pertain to over-signing, as my questions are assuming that the school is ethical and is trying to play by the normal rules.  I'm asking what most schools should/could/actually do under the following circumstances:

Here goes...

For obvious reasons, programs map out what their needs & goals are for a particular recruiting class.  And for obvious reasons teams send out more offers than actual slots available.    Some schools strategize and perhaps pursue a ton of kids but will have less time to spend on each one.  Other schools cast their nets not as wide but try to shower a smaller number with more attention and TLC.  But ultimately, schools are sending out more offers than they have slots on the team.

1)  What happens when those slots get occupied (at least preliminarily) by verbal committments, particularly at a faster or greater matriculation rate than anticipated?

 Example:  Team X wants to take 2-3 offensive linemen in a class.  They give offers to 25, sensibly thinking that they won't get them all.  But what happens if in a matter of a week or two, some number much higher than 2-3 decide to committ?  I could see one extra OL sliding in there no big deal.  But if you're trying to be as efficient as possible, especially with a small recruiting class, you don't want to have 4 or 5 OLs on board when you really wanted 2-3.  Does this ever happen?  Or are the teams much more on top of the current state of affairs?  Do the kids self police and eyeball each other such that highly ranked guys won't enter a school's recruiting class if it's perceived that the class will be too stacked at that position in that class?  Or is it first come first served?  Schools give 25 offers, but tell each kid 'we are only taking 2-3 so wait at your own risk'?  Can a school revoke the offers once a class gets it's desired quota filled for that position?

Which brings me to.....

2)  What happens if a somewhat less desireable target to fill a needed position verbally committs when there is a more highly desired target that is still uncommitted for that same position?  

Example:  The class only has room for 3 O-Linemen.  Five star OT Bob is given an offer but keeps it cool and doesn't commit right away becasue a ton of other options.  Three star OT Joe is given an offer one month later and takes about a nanosecond to commit because he's just happy to be there.  Is Bob out of luck? Is the team obligated to take Joe, and if they want Bob do they need to "find room" by not taking a WR or CB in that same class?  And even so, once the class fills up towards the end of the year, even if a team WANTED to just forego getting a WR or CB that year and take Bob, if things get jam packed, the team would basically have to turn away Bob in favor of Joe at that point, no?  Or do we now get into the murky world of over-signing & having coaches tell a kid "look, you can sign your LOI and block Bob from coming here, but if you do, you won't see a minute of playing time so you may as well look for another home"?  Or do certain schools just make damned sure that if they only have one slot for a certain position type, that every single offer they send out, they are OK and at peace with the fact that any given kid could accept the offer, shut down the rest of the position group from that class, even if the rest of the position group has more highly coveted players?

Thank you in advance.