I will try to give some more specific steps to remove the validations. I'm using the four you mentioned.
phone
remove the server validation
$WAFV_Errors .= WAValidatePN(((isset($_POST["UserPhone"]))?$_POST["UserPhone"]:"") . "",false,true,true,13);
then remove this spry validation
var sprytextfield4 = new Spry.Widget.ValidationTextField("sprytextfield4", "none", {validateOn:["blur"], minChars:7, maxChars:20});
then the onblur event for this form element
fax
remove this server validation
$WAFV_Errors .= WAValidatePN(((isset($_POST["UserFax"]))?$_POST["UserFax"]:"") . "",false,true,false,14);
remove this spry validation code
var sprytextfield5 = new Spry.Widget.ValidationTextField("sprytextfield5", "none", {isRequired:false, minChars:7, maxChars:20, validateOn:["blur"]});
then remove the onblur event from the form element
state
remove this server validation
$WAFV_Errors .= WAValidateRQ(((isset($_POST["UserState"]))?$_POST["UserState"]:"") . "",false,17);
remove this spry validation
var spryselect1 = new Spry.Widget.ValidationSelect("spryselect1", {validateOn:["blur", "change"]});
then remove the onblur event from this form element
zip
remove this server validation
$WAFV_Errors .= WAValidateZC(((isset($_POST["UserZip"]))?$_POST["UserZip"]:"") . "",true,true,true,true,true,18);
remove this spry validation
var sprytextfield8 = new Spry.Widget.ValidationTextField("sprytextfield8", "none", {validateOn:["blur"], minChars:5, maxChars:10});
then remove the onblur event from the element
You can remove the server validations and regular client validations that are applied to the form with the validation toolkit or the new CSS Form Builder. For the server validations you would edit the server validations server behavior, find the validations in the list and remove the ones you do not want. For the non spry client validations that are applied you can just select the form element and in the behaviors tab of the tag panel select the validation and remove it.
To remove the spry validations you can select the form element and see it's spry validation tag, then go down into the spry script code and remove the line for that spry field.