As a Victory tech, I have seen this happen before on cold starts. Essentially what happens is the oil is cold and puts resistance against the motor turning over. The weakest part between in the system is the starter. It twisted internally a slight amount. Good news, it won't prevent the bike starting. Bad news, it won't go away without replacing the starter. Its sort of a pain staking process, so unless you are mechanically inclined, I would recommend a shop changing it out. Basically exhaust has to be removed, motor needs to be lowered down to remove the starter. I know the times I have had to do it, we charged around 4 hours to change it out.