Openlayers / Openstreetmap background is vertically striped and squished

So the background of my openlayers implementation appears to be squished into vertical stripes. The weird thing is that it wasn't always like this but even when I stash all my changes back to a point where I know it was working, it still is broken. It makes me wonder if perhaps something has changed about the way the tile assets are being delivered. I have tried switching between using osm and wms layers with no change, any help would be appreciated.

Here is the pertinent code:

initMap: function() {
  var view = this;
  var map = this.map = new OpenLayers.Map();
  map.render(this.$map[0]);

  var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
    "http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: 'basic'});

  var osmLayer = new OpenLayers.Layer.OSM();

  this.layers = {
    point: new OpenLayers.Layer.Vector("Point Layer"),
    line: new OpenLayers.Layer.Vector("Line Layer"),
    polygon: new OpenLayers.Layer.Vector("Polygon Layer")
  };

  this.setValue(this.value);

  map.addLayers([this.layers.point, this.layers.line, this.layers.polygon, osmLayer]);

  drawControls = {
    point: new OpenLayers.Control.DrawFeature(this.layers.point,
      OpenLayers.Handler.Point),
    line: new OpenLayers.Control.DrawFeature(this.layers.line,
      OpenLayers.Handler.Path),
    polygon: new OpenLayers.Control.DrawFeature(this.layers.polygon,
      OpenLayers.Handler.Polygon)
  };

  this.layers[this.layerType].events.on({'sketchcomplete': function(feature) {

    if (!view.multiple) {
      // deactivate polygon layer once a polygon has been added
      drawControls[view.layerType].deactivate();
    }

  }});

  for(var key in drawControls) {
    map.addControl(drawControls[key]);
  }

  if (this.layers[this.layerType].features.length) {
    var bounds = this.layers[this.layerType].getDataExtent();
    var zoom = this.layers[this.layerType].getZoomForExtent(bounds);
    var lon = (bounds.top - bounds.bottom) / 2;
    var lat = (bounds.r