Nope, sorry, the 2SF driver itself is limited to looping songs, unless you know of some way to not loop songs. Any "cool" ending will be completely bypassed by looping commands.
I'm not familiar with the way VGMTrans does it, but have you tried changing the "fade" PSF tag? You can use VGMToolbox's xSF Tag Editor or psfpoint.exe to do it.
Changing the fade tag will only change the fade duration, or eliminate the fade. It will not make any sequences which have endings post-loop to magically stop looping.
There is no fade "cancelling" in most of these looped formats. VGM, for instance, has absolutely nothing past the loop end, which by definition is the end of the entire log. Only the loop start is specified.
You're welcome to try disabling fades, but the songs won't magically end on some new music data that sounds like an ending. They'll just hit the end of their loop and abruptly stop.