If you’re unsuccessful using the wrench, you may need to go in through the drain in an attempt to remove the clog. Disconnect the power to the disposal by unplugging the unit or turning off its circuit breaker, then use long-handled tongs and a flashlight to try to remove the jam.  Never use your hands for this task, even if the disposal is completely disconnected from its power source! Fumbling blindly around a disc of sharp blades is asking for injury.
A sink flange is the uppermost portion of a garbage disposal.  It is the point where the sink, drain, and garbage disposal meet, and it keeps debris from clogging your drain.  If you have a leak at the uppermost area of your garbage disposal, the source is likely your garbage disposal flange.  The two most likely reasons for a flange leak are that the mounting bolts have loosened and that the plumber’s putty has failed.
The only existing hole I can think of ‘near the top’ that is a part of the unit, would be the place where a dishwasher hose would attach. Was that disposal once connected to a dishwasher that is no longer there? If so, that could be why water is coming out of ‘an existing hole’… Seems silly maybe, but sometimes the most obvious really is the answer.
Determine whether there's an Allen-wrench port at the bottom of the disposal, which is located under the sink. If there is, insert an Allen-wrench into the port and turn it back and forth to move the masher plate and dislodge the glass. If you can't find an Allen-wrench port, insert the handle of a broom or a hammer into the top of the garbage disposal and wiggle it around to try to dislodge the glass.
Save yourself a lot of hassle and go with the same brand & model. By doing so you'll avoid having to remount and mess with the drain & sink connections. Save the old power cord so you don't have to buy a new one. You'll need to do some very minimal wiring work to pull the wires from the terminals in the old disposal and attach them to the disposal. Make sure to attach the green grounding wire to avoid getting shocked when you switch on the disposal!
Our most affordable large-capacity model ready to tackle Our most affordable large-capacity model ready to tackle meals of up to 750 persons with its powerful 3 HP motor. Like all InSinkErator food service disposers it delivers superior performance quiet operation maximum energy efficiency and long service life. Designed for continuous operation in locations such as large banquet facilities ...  More + Product Details Close
If you can hear your disposal’s motor humming, but the disposal won’t grind, sounds loud, or starts and stops, it’s probably because something jammed it. Disposals jam when something gets lodged in the “flywheel,” which is what the disposal’s rotating plate is called. You can fix it yourself, but remember: NEVER stick your hand down the garbage disposal. Ever. Seriously.

Regarding the comments that the EZ Mount is flimsy or cheap or plastic, I have to respectfully disagree. The purpose of the lock ring is to compress the rubber gasket tight enough to make a seal so the thing doesn't leak. It doesn't need to be made from titanium or cast iron. Just because it isn't made from a rare earth metal doesn't make it inferior! It keeps the price down and works (so far) flawlessly. I did not need to tap the ears with a small hammer to get it to slide to the fully locked position - I was able to twist it into place with my bare non-Superman hands. I did not need to put dish soap on the ear slots but the directions suggest doing that if it is difficult to put into locked position.
You can buy a 1/3-hp disposal for $80 or less, but our experts suggest that a more expensive unit with at least 3/4 hp would be a better choice. The more powerful the motor, the less chance it will jam. In addition, higher-priced disposals are generally quieter and have longer warranties. If you need to replace the splash guard guard as part of your garbage disposal installation, take a look at this guide.
If your garbage disposal just won’t turn at all, then it’s very likely that the disposal has lost power. Your unit may have blown a circuit, or it could be unplugged. First, check the plug for your garbage disposal to ensure that it’s secure. Next, locate the reset button on the underside of the unit, and push it. If neither of these things fixes the problem, look inside your electrical panel for signs of a tripped circuit.

Garbage Disposal Repair or Replacement