You are not the only one still interested in RL's movements that day. I am wondering, if he frequently - or at all - took that shortcut from the cemetery to the NW end of the bridge to then hit the trail over to Old Camden Road, then downtown to do possibly get to the local L store on W Main/ S Market? It is only app 2.5 miles one way. Not saying he did, just considering it.
If he went towards the trail on February 13, did he possibly saw something or someone? I am not necessarily thinking of the girls but of the perp.
He may be directly involved into this in some way- disposing of evidence?- , or he may be covering for someone. There is simply no reason IMO for LE not to clear him, unless they can't or won't. I am waiting fore this to happen in a PC, or for additional charges to be filed, or for additional arrest(s). Until then, everyone is included in the envelope of suspicion (..) , including RL.
All IMO
-Nin