diff --git a/lib/postman-sandbox.js b/lib/postman-sandbox.js
index 5687fca2..4d8ae953 100644
--- a/lib/postman-sandbox.js
+++ b/lib/postman-sandbox.js
@@ -9,15 +9,11 @@ const _ = require('lodash'),
     EXECUTION_TIMEOUT_ERROR_MESSAGE = 'sandbox not responding',
     BRIDGE_DISCONNECTING_ERROR_MESSAGE = 'sandbox: execution interrupted, bridge disconnecting.';
 
-let MAIN_MODULE = null,
-    ACTIVE_INSTANCES = 0;
-
 class PostmanSandbox extends UniversalVM {
     constructor () {
         super();
 
         this._executing = {};
-        this._initialized = false;
     }
 
     initialize (initOptions, connectOptions, callback) {
@@ -27,17 +23,6 @@ class PostmanSandbox extends UniversalVM {
 
         this.debug = Boolean(connectOptions.debug);
 
-        // Modify mainModule to prevent access to the Module object
-        if (!MAIN_MODULE && typeof process === 'object' && process.mainModule) {
-            MAIN_MODULE = process.mainModule;
-            process.mainModule = {
-                ..._.pick(process.mainModule, ['id', 'path', 'paths', 'filename', 'loaded']),
-                exports: {},
-                children: [],
-                parent: null
-            };
-        }
-
         // set the dispatch timeout of UVM based on what is set in options unless original options sends the same
         _.isFinite(connectOptions.timeout) &&
             (connectOptions.dispatchTimeout = this.executionTimeout = connectOptions.timeout);
@@ -46,9 +31,6 @@ class PostmanSandbox extends UniversalVM {
             if (err) { return callback(err); }
 
             this.once('initialize', (err) => {
-                this._initialized = !err;
-                ACTIVE_INSTANCES++;
-
                 this.on(CONSOLE_EVENT_NAME, (cursor, level, args) => {
                     if (connectOptions.serializeLogs) {
                         return this.emit('console', cursor, level, args);
@@ -150,10 +132,6 @@ class PostmanSandbox extends UniversalVM {
     }
 
     dispose () {
-        if (!this._initialized) {
-            return;
-        }
-
         _.forEach(this._executing, (irq, id) => {
             irq && clearTimeout(irq);
 
@@ -167,15 +145,6 @@ class PostmanSandbox extends UniversalVM {
 
         this.removeAllListeners(CONSOLE_EVENT_NAME);
         this.disconnect();
-
-        this._initialized = false;
-        ACTIVE_INSTANCES--;
-
-        // reset the mainModule to its original value
-        if (ACTIVE_INSTANCES === 0 && MAIN_MODULE) {
-            process.mainModule = MAIN_MODULE;
-            MAIN_MODULE = null;
-        }
     }
 }