The key question is: what do you want to get out of MBA? It won't bring you back to the legal profession, as you may be aware, large US law firms mostly hire top school JDs (I'm not saying LL.Ms can't find law firm jobs, in fact, a few of them can). If you're switching job, which field are you looking at? how to apply your legal knowledge? Is it a better time / money spent than staying as an in-house and progress to the chief counsel eventually? Hope these help...