Several, but none fully logical. Turbine just wrote it badly. The Dwarves are portrayed as either idiots, traitors or cowards in every logical scenario. Sometimes all three at once.
Heck just look at how they deal with wanting to speak to Glóin.
"Let's ask his advice about this whole reclaiming business. I heard he's at Rivendell."
"Yes Lord Brogur, I shall immediately send some messengers over the High Pass."
"Nonsense, let's take the entire Garrison there."
"My Lord?...but...it's nearly 100 miles north of here...and there are hundreds of us. Heavily burdened with carts and equipment and stuff...it will take us weeks if not months."
"And the High Pass is...ahem, a high mountain pass covered in snow with frequent avelanches and blizzards..."
"...right away, my Lord...."