I think the "join" the refer to is just like you said, just start knitting at the part after the stitches on hold, then weave in the end later. I wouldn't put a knot in it, if the stitch is loose, just go with it for now and you can tighten it up by pulling on the tail. Just make sure to leave a long enough tail so your knitting doesn't come unraveled.
Another guy knitter
I do what the stitches tell me....
-----BEGIN KNITTER'S GEEK CODE BLOCK-----
KER++ Exp+(+) SPM+(+) Wood@ KPO++ !Pl Boye- Cas? Den> Bam> Syn- !Nov Cot>+ Wool+++ Hemp>+ Stash+(+) Scale+ Fin(+) ENT> FI+ Int+ Tex++ Lace> Felt+ Flat Circ++ DPN++ ML+>+ Swatch-@ KIP->+ Blog++ EZ->+ FO WIP GaugeF(DW, W) AltCr
------END KNITTER'S GEEK CODE BLOCK------