Yes, simply place the brisket on a large baking sheet and continue cooking in the oven at 225 degrees. Sometimes you may come across bad weather and need to finish cooking inside.  I actually had to do this recently because of an equipment issue, and the brisket was still a huge hit with succulent, tender meat. Fortunately, it was after wrapping the brisket in butcher paper, so a lot of that smoke flavor already infused the meat.