Pork butt for pulled pork - tied or untied?

[jmccrack]

Just bought two boneless pork butt roasts (around 4lb each).  They came tied up.  

Should I leave them tied or untie them first before smoking?

 

[woodcutter]

They are tied to keep the end tat was cut up to remove the bone. They will stay together better if you leave them tied.

 

[smokinhusker]

I agree with Woodcutter...leave them tied