Ask your commish to agree that any last-minute trades who he/she feels will not be a problem and are fair trades to execute them immediately in order that both teams can then use these players. The commish can do this, I run a friends only league also and operate this policy for all team owners.
I appreciate the help, but I know how to execute a trade immediately. This post wasn't meant as a "How do I". I was posting a suggestion of an option that the players in my league have asked for.
Why couldn't there be a choice of No delay in addition to the current choices (48 hours, 24 hours)? The commish or the alternate aren't always available to force a trade. In a small friends only league like we are in, we don't worry about a trade that isn't right. Might be a small percentage of leagues that would ever use it, but I know we would.