A blade broke out of my disposal-can I just replace the blade?

no
http://waterheatertimer.org/How-to-repair-and-install-Garbage-disposal.html

gene

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No.
Replace disposal
http://waterheatertimer.org/How-to-repair-and-install-Garbage-disposal.html#install

Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Which direction does disposal blade turn?
For example when looking straight-on at the nut holding power saw blade, the blade rotates counterclockwise, so the nut is reverse thread.
Most disposals are not made for repairs
http://waterheatertimer.org/How-to-repair-and-install-Garbage-disposal.html
Add a comment and say where you are getting the parts and which model

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Use wood broomstick handle down into disposal.
Wedge broomstick against side of sink opening and rotate blades free.
Or use allen wrench on bottom of disposal to free cutter blade.

If blades rotate freely and disposal has power, and reset is not tripped or will not reset, then disposal is bad.
I wrote ez disposal replacement steps:
http://www.fixya.com/support/r7929008-replace_garbage_disposal

Red reset button is located next to wire connection on disposal side.

If blades rotate freely and disposal has power, and reset is not tripped or will not reset, then disposal is bad.

If blades are stuck, use wood broomstick handle down into disposal.
Wedge broomstick against side of sink opening and rotate blades free.
Or use allen wrench on bottom of disposal to free cutter blade.

I wrote ez disposal replacement steps:
http://www.fixya.com/support/r7929008-replace_garbage_disposal

You cant break stainless steel cutter blade, welded parts and steel ball bearings with water mellon rinds.
Even a metal fork should not break a garbage disposal ... the fork will wedge against the side wall and cause cutter blade to get stuck. Once the fork is removed, no damage is done.

If insinkerator is shaking, then either a bearing has rusted out, or the shaft has finally worn out.
The stainless cutter blade is permanently attached to a steel shaft that goes into the sealed bearing. If the cutter weld is broken, then the disposal will wobble. If the bearing wears out, then the steel shaft will wobble. If the steel shaft is worn down at the bearing, then the cutter plate will wobble. A tiny bit of wobble will cause the disposal to shake. A brand new disposal will vibrate.
Check date of purchase receipt.
Amazon shows warranty is 2 years:
http://www.amazon.com/InSinkErator-Badger-Food-Waste-Disposer/dp/B00004U9JO/ref=sr_1_3?ie=UTF8&qid=1303015273&sr=8-3
If disposal is 3-5 years old then that is a short lifetime for a solid product like the 1/2 HP.
If disposal is 5-8 years old, that's a good run. 8-12 years is very good.
I wrote tips for replacing disposal from days when I worked apartment maintenance:
We replaced disposals every 6-7 years. Some never wore out. Others went bad right away.
http://www.fixya.com/support/r7929008-replace_garbage_disposal

Sorry to say if the reset button is broke it would be less expensive to replace the disposal then try to repair it.Thank you

that is a project I wouldn't reccomend. besides the "blades" are not really changable. The blades are a piece of metal cut at an angle and when they spin they grind the food by rubbing against a series of holes in the base.
if the disposal is not grinding the food, then its time to replace the disposal.

have been a pluming mechcanic (yes no license) for 25 yr's and have never ben able to replace blade's on any disposal , from any manufact. do believe some blade's are stationary.

Sorry to have to tell you this but Remington has gone bankrupt. The unit only had a one year warranty on them and when they broke, a new unit was sent to replace the broke one. It was considered a throw away unit.
Sorry for the news but that is part of being in a "disposable" society.
Good Day.