[Plugin: amr ical events lists] descending sort order?

Firstly, this plugin is absolute HEAVEN and it totally looks great. Thank you so much! Here’s my question:

Is it possible to list the events in descending rather than ascending sort order? I’m using the plugin on two different pages, one to show previous events, and one to show upcoming events, and I’d love to sort the previous events with the most recent at the top of the list. Here’s the shortcode I’m using:

Upcoming Events
[iCal url headings=0 pagination=0 startoffset=-7]

Previous Events
[iCal url headings=0 pagination=0 listtype=17 startoffset=-9999 days=9999]

And you can see it here:
http://www.liambyrne.net/concerts

http://wordpress.org/extend/plugins/amr-ical-events-list/