No, you cannot. The Modeler checks whether your entire application model is consistent, and if it is not, you need to fix the error(s) before you can deploy. This is to prevent errors in the runtime, which assumes that the deployed application model is consistent. If you were to deploy a project that contains errors, your application would probably not work correctly.
That's right, you can't deploy a project that has errors. A way around is not necessary! Just click on the error lines and start solving the errors.
Actualy this is posible (not the way to go though!!!). Simply export your project as SQLLite file. Rename the file extension (.mpr) to .mdp and put it in the "deployment folder"/WEB-INF/model/ directory. Start the app server.