I have certainly flown airplanes which were not "fine" following repairs from an accident - including a Tomahawk. I have no idea the condition of the plane you're discussing, but I make no assumptions either. If the firewall of a Tomahawk has been damaged, the rudder cable pulleys there could have been displaced a little, and this can result in inadequate adjustment of rudder cable tension. Unlike Cessnas, with floppy rudders, the rudder of a Tomahawk should be firm to the nosewheel steering. 'Just on thing to check. That said, my experience with T tail airplanes (and I own one) is that T tails do tend to move around more noticeably than conventional tails, so some movement is not necessarily reason for concern - as long as all structure is as it should be, and there is no freeplay in flight controls.