Reseting ONLY Ethernet Shield, but NOT the arduino!

hi guys,

im trying just to reset the ethernet shield, but not the arduino itself.

for that, i bent the reset pin from the ethernet shield, so its not connected to the arduinos reset pin.

But if im pushing the ethernet shields reset button, which will pull down the reset pin of the wiznet chip to groudn, BOTH are reseted - the ethernetshield AND the arduino.

Am i doing something wrong? This is my version of the shield:

Behaviour is the same on uno and mega.

Any ideas? Thanks so much!

[Background: Why i want to try to reset only the ethernet shield? because im on of the lucky guys, the shield is hanging up for whatever reason after some hours... with basic sketch - checked also Memory.. all is fine, but its haning up...]