I second what atthelake recalled from MSM. I also remember reading that JR's brother had zero knowledge of his brother's cover story, wasn't in FL, no plan to be and did not 'just' graduate law school (hence nothing to celebrate). I don't want to say anything else about the brother because IMO, he is a victim. I'm not directing this at anyone, just rambling. It must be devastating to not know whether your family member is capable of such violence. And they involve you, even if its insignificantly or indirectly. IMO, JR told this tale to assure his boss that the FL trip was totally G-rated, under his brother's watch and/or make up a 'really big deal' requiring him to go to FL last minute.
JR's either a terrible brother, which is possible, or never thought that tale he told the boss would go anywhere, didn't think it would be checked out by LE and thus involving his brother in this web of lies. As a law student, the stakes are higher if you have a 'run in' with LE. This would be a nightmare scenario. Being on the other side of the law during law school can easily result in not being able to sit for the bar exam. Bad credit counts, anything that could make the bar examiners question your character and fitness to practice law.