Darrell!
That is a nice plant. Remember, they are trees! And it's branching nicely, giving you not one but three chances for blooms next year! The trunk can easily be straightened by tying it to a stake.
If you do decide to cut the top off I would NOT do it now. The plant will soon go dormant, lose all its leaves and sit there for several months without doing anything. It won't need water or light during this time but you must protect it from frost (what is your zone?).
If you should still want to cut it, do it in the spring when it breaks dormancy. The top section can be rooted, and the bottom section will sprout new branches.
