Should I make a roster move to my fantasy baseball team?

I'm in a weekly head-to-head league and my team is now riddled with injuries. We are allowed on DL spot, but I have more players hurt than that spot allows. I have Andrew Bailey, Ian Kinsler, and Jacoby Ellsbury officially on the DL as well as Ryan Howard and Aramis Ramirez banged up as well. I don't have any backups for 1st or 3rd currently with so many guys on the DL. Should I hope for the best that they don't miss much time or should I drop one of my DL guys to get a good backup. I could also drop a SP such as Max Scherzer or Ted Lilly to add a fill-in. What should I do?