Delay of game question

[letemplay]

"COULD" a delay of game T be called prior to warning in this sitch:

Following basket by B, B5 gets ball out of net and acts as if he's looking for ref, while at same time drifting back upcourt with ball, clearly (whether intentional or not is only known to him I suppose) delaying action to allow his team a press set up. Team A has player on baseline for throw in and other players in immediate position to field inbounds pass, but a few seconds at least are used by B5's actions. After getting to about 3 point line, he finally throws it half across court to baseline official, who passes it over to A1 to make inbound pass. While this definitely deserves a delay WARNING, could a T be called?