Today is the 4 year anniversary of the disappearance of Haleigh Cummings. Think about what happened in that case. LE knew that Misty was involved, but they didn't have evidence to prove it, so they watched and waited, waited and watched. They knew she wouldn't be able to stay away from the drugs. They gave her just enough rope to hang herself. And now she is serving a 25 year prison sentence for drugs. Sure, it isn't for what happened to Haleigh -- but she is off the streets and in prison for 25 years. That's good enough. It had to be -- it was all LE could manage.
I suspect this is much less about making sure he makes his trial date, and much more about making him try to talk. And if he doesn't talk -- LE will take "good enough" and put him away for life for drug charges.
(LE obviously thinks he did it. Does anyone remember this?:
http://www.huffingtonpost.com/2012/07/19/misty-daniel-morrissey-criminal-records-meth_n_1688083.html)