Red Hat Rob points out that the new Republican controlled Tennessee legislature doesn't have to wait until 2011 and another election cycle to redistrict the state:
The state constitution requires that districts be re-drawn after each Federal Census, but the constitution specifically reserves to the legislature the right to re-district at any time: (snip)Republicans might want to strike while the iron is hot. The Democrats left a huge mess to clean up. It's going to take as many Republicans as possible to get things in order and set a better course. The Democrats are going to whine and moan about everything next session anyway...might as well pile it on and get as much done as possible as quickly as possible.
Incidentally, the current district scheme appears to violate the state constitution which prohibits a multi-county house district if it is carved out of parts of 2 counties. Wherever possible, house districts are supposed to respect county boundaries - a very reasonable prescription intended to check the temptation to gerrymander.