assume rtow is vmbe limited and you take off(using max v1) followed by an immediate return,remember v1 cannot be greater than vr which inturn cannt be greater than v2, which by the way is about 20% above vs. on the return vref for say the same wt is about 30% above vs. assume a stall speed of 180 kts so we are talking about absorbing the energy equvalent of 18 kts
Actually, no, because the worst case is where V1 was restricted by Vmbe, not by Vr/V2.
If you were forced to have a low V1 due to V1max being restricted by Vmbe then it's possible that V1 might be 60-70% of V2, in which case your Vref will be substantially above the Vmbe.
The only good thing about such a scenario is that if you were able to accept such a low V1 then it's likely you have a very long runway, which will help when it comes time to land.