diff --git a/Gruntfile.js b/Gruntfile.js
index 0adc7b6..3966962 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -13,12 +13,7 @@ module.exports = function(grunt) {
 			dist: {
 				files: {
 					'dist/<%= pkg.name %>.debug.js': ['src/viewer.js', 'src/**/*.js'],
-					'dist/<%= pkg.name %>-deps.debug.js': [
-						'deps/*.js',
-						'vendor/underscore/underscore.js',
-						'vendor/backbone/backbone.js',
-						'vendor/backbone.wreqr/lib/backbone.wreqr.js'
-					]
+					'dist/<%= pkg.name %>-deps.debug.js': ['deps/*.js']
 				}
 			}
 		},
diff --git a/bower.json b/bower.json
index 2afecfd..bdb4c85 100644
--- a/bower.json
+++ b/bower.json
@@ -11,12 +11,9 @@
   "ignore": [
     "**/.*",
     "node_modules",
-    "bower_components",
+    "vendor",
     "test",
     "tests"
   ],
-  "dependencies": {
-    "backbone": "~1.1.1",
-    "backbone.wreqr": "~1.0.0"
-  }
+  "dependencies": {}
 }
diff --git a/src/lib/Model_DemWithOverlays.js b/src/lib/Model_DemWithOverlays.js
index eea5d9f..86a3077 100644
--- a/src/lib/Model_DemWithOverlays.js
+++ b/src/lib/Model_DemWithOverlays.js
@@ -33,6 +33,10 @@ RBV.Models.DemWithOverlays.prototype.setDemProvider = function(provider) {
  */
 RBV.Models.DemWithOverlays.prototype.addImageryProvider = function(provider) {
     this.imageryProviders.push(provider);
+
+    // this.listenTo(provider, 'opacity:change', function(model, value) {
+    //     console.log('Provider "' + model.id + '" changed opacity to "' + value + '"');
+    // });
 };
 
 /**
@@ -71,9 +75,17 @@ RBV.Models.DemWithOverlays.prototype.createModel = function(root, cubeSizeX, cub
     this.root = root;
     this.createPlaceHolder();
 
+    // Convert the original Backbone.Model layers to 'plain-old-data' javascript objects:
+    var podImageryProviders = [];
+    _.each(this.imageryProviders, function(layer, idx) {
+        podImageryProviders.push(layer.toJSON());
+    });
+
+    var podDemProvider = this.demRequest.toJSON();
+    
     EarthServerGenericClient.getDEMWithOverlays(this, {
-        dem: this.demRequest,
-        imagery: this.imageryProviders,
+        dem: podDemProvider,
+        imagery: podImageryProviders,
         bbox: bbox,
         timespan: this.timespan,
         resX: this.XResolution,
diff --git a/src/provider.js b/src/provider.js
deleted file mode 100644
index 1111245..0000000
--- a/src/provider.js
+++ /dev/null
@@ -1,69 +0,0 @@
-RBV.Provider = RBV.Provider || {};
-
-/**
- * @class OGCProvider: An abstract object managing a request to a OGC service provider.
- */
-RBV.Provider.OGCProvider = function(opts) {}
-
-RBV.Provider.OGCProvider.prototype.init = function(opts) {
-	// FIXXME: error handling!
-	this.protocol = opts.protocol;
-	this.id = opts.id;
-	this.urls = opts.urls;
-	this.style = opts.style || 'default';
-	this.crs = opts.crs;
-	this.format = opts.format;
-	this.version = opts.version;
-
-	this.mimeTypeHandlers = {};
-}
-
-RBV.Provider.OGCProvider.prototype.toString = function() {
-	return '[' + this.protocol + '] id: ' + this.id;
-};
-
-/**
- * Registers a handler for a specific format for preprocessing data received
- * by a data request. An eventual registered handler with the same mimetype
- * will be overwritten.
- *
- * @param mimetype - MIME type name (i.e. 'image/x-aaigrid')
- * @returns {boolean} - TRUE if a handler for the given format was already registered,
- * FALSE if not
- */
-RBV.Provider.OGCProvider.prototype.registerMimeTypeHandler = function(mimetype, handler) {
-	var wasRegistered = false;
-	if (this.mimeTypeHandlers[mimetype]) {
-		wasRegistered = true;
-	}
-	this.mimeTypeHandlers[mimetype] = handler;
-
-	return wasRegistered;
-};
-
-RBV.Provider.OGCProvider.prototype.getMimeTypeHandlers = function() {
-	return this.mimeTypeHandlers;
-};
-
-/**
- * @class WMS: A WMS provider.
- */
-RBV.Provider.WMS = function(opts) {
-	opts.protocol = 'WMS';
-	opts.version = opts.version || '1.0.0';
-	RBV.Provider.OGCProvider.prototype.init.call(this, opts);
-}
-RBV.Provider.WMS.inheritsFrom(RBV.Provider.OGCProvider)
-
-/**
- * @class WCS: A WCS provider.
- */
-RBV.Provider.WCS = function(opts) {
-	opts.protocol = 'WCS';
-	opts.version = opts.version || '2.0.0';
-	RBV.Provider.OGCProvider.prototype.init.call(this, opts);
-
-	this.outputCRS = opts.outputCRS;
-	this.datatype = opts.datatype;
-}
-RBV.Provider.WCS.inheritsFrom(RBV.Provider.OGCProvider)
\ No newline at end of file