I think the problem only occurs when there are ships nearby, so the bigger hip can't move? or something, it can uccur when you want to jump and the Titan want to turn and your ships are in the way, or when you want to escape, and enemy ships accidentally close up and even overtake your Titan or cap, disturbing it's path.
Solution: try not to let them use that shitty auto-path finder, I try to give them a movement order well before the edge of the gravity well, so they almost face the good direction when they reach the jump point, and then I order the jump and most times the sequence starts right after the order. It is not rare they do a 360° on their own making me cry as they die from their own stupidness, as the auto-functions of this game are so badly written :/ LOL I remember once my Akkan, I ordered it to use ion bolt on a progenitor, it was well in range so not even in edge, and the Z axis difference wasnt that big, and what my ship did? it went in the complete opposite direction until I gave it a movement order.. it looked like it is coward and running away on it's own 
it was so strange in no dimensions was it closing on the progenitor, it looked like it wanted to go around the nearby ice planet....
VL titan and AR titan are notorious for that....
Yes I saw once my VL titan do a backflip instead of locking on the bombardment, it can be fixed by giving the movement order and only giving the attack order when it faces the target well. Movement orders worked for me well, but sometimes I forget and I only wonder why my titan is facing the other direction than it should..
