If you haven't yet, make sure you read Part 1 & Part 2 of this discussion.
Here's some more from the OP:
"I've been leading worship at this particular church as a fill in WL until their regular WL recovers from a surgery. I've only worked with this band for 2-3 weeks... The problem is that this week we have a guest preacher coming in and my pastor wants to scrap out the worship alltogether to give the preacher more time to preach and his wife time to sing a solo song. I've been given 3-5 minutes (maybe). I'm planning to stretch the alloted time out to 10-12 min, give them a full worship experience and face the consequences later (providing we don't get pulled off the stage by the pastor after the first song). We'll face what may come Sunday morning :)"
I've highlighted a few of the parts that really jumped out to me as especially interesting...it's very evident that the OP does not trust his/her pastor's judgment and that he/she is planning on usurping his authority. Do you see any problems with the OP's attitude concerning his/her pastor and his/her role at a worship leader?