This has nothing to do with Anope. I've noticed that plexus3 stores the RESV's in nresv.conf like this:
"nick","reason"
This means that if someone enters nick\ as a nick, it will become:
"nick\","reason"
But hey, the " after nick\ is escaped now, by the \ from nick\! Plexus3 should escape the \ before writing it to nresv.conf
[Edited on 8-10-2006 by GeniusDex]