Binding to Kalista

So In spawn when your the one getting binded by Kalista you usually cant leave spawn until :25 so that can really hurt level 1 if you wanted to invade or if you got invaded. Or just getting wards down early. Sometimes i see the person getting binded by kalista "dieing walking" Lol. they are out of spawn at a fine time and get to walk while be binded by kalista. Not 100% sure if its luck/or how they do it but when i play Kalista with my friends they dont get out of spawn until later.