The kick-out is probably really happening, and then the heavy front-end of your arrow is pulling the rest of the shaft into line in time to impact straight. My new DIY heavy arrows do/did this too when I bareshaft tested. I was at my local shop today and asked about it... and got a heap of warning over it. I may not shoot them again (I'll re-use their components in better arrows though).
My local guy shoots competitively and knows his stuff. After he asked about my arrow set up (I got Wal-Mart MossyOak arrows which are actually Victory VForce Gamers, 340-ish spine, and ethics 200gr inserts and 100gr broadheads) he warned me I was "playing with fire". An under-spined arrow flexes so much at release (heavy force trying to get heavy front end to move, carbon in-between flexing as a result) that he's had them break after several rounds while nock-tuning (showed me his splintered 340 spine arrow). Now he forcefully flexes every arrow after every shot to catch problems before they splinter and hit his hand while tuning hundreds of arrows a year for customers, and uses 250 spine arrows instead.
I really had to move my rest and sight a lot to follow impact and group shots after finding a weight that consistently pointed back correctly, and I'm sure that is compensation for the heavy front-end/flexing, and wrenching my bow out of whack in the process. My lighter arrows were spot-on before I tried heavier ones.
So even after I got heavy arrows to group very nicely (I stacked 4 touching at 20yds), they were relatively cheap at $6/arrow + parts, because I wanted to experiment but not break the bank - and I was pretty happy... just concerned over the rest/sight moves, etc.
I took his offer to go over the bow to make sure it's in good shape and tuned (it was bought ... dang, 12 years ago now... at a sporting-goods store, "tuned" at purchase in store, and it needs new cables & strings anyway)... and I'm open to buying new arrows he sets up for my own bow, draw weight, etc. He said the overall weight and FOC would end up close to what I had anyway, just safer.
Plus he said he'd have me shoot several rounds with it after his work and he'd tweak anything I wasn't completely happy with, and could bring it back later for a free update if needed. He's a good guy, the setup charge won't be $50 more than I'd pay to have him re-string it anyway, plus maybe another $50 for arrows... and I'll sleep better at night for it - my hands are my living.
Just be careful you've got adequately/safely spined arrows if you choose to upgrade, is all. Ranch Fairy doesn't cover the consequences of not, very much.