(1) staccato articulation in lower velocities could work as a more agile detache.
(2) portato short works as a longer detache, but the release tails don't seem to be scripted to allow you to choose when to release, so you can't really control the detache note length.
(3) sustain you can control the detache length, I totally agree with ProfoundSilence's suggestion - also, sometimes it helps to use a gradual, consistent upwards increase in CC1 control until you release, that doesn't always work, but can be the desired effect sometimes.
As a side note - I'm hoping the release trails might become one of the advantages with the sine player. Based on the trailers and NAMM videos about sine player, it seems like intelligent loudness matching to make release trails more seamless is one of the features.