Shrewsbury goalkeeper Chris Weale fouled JP McGovern in the area on 68 minutes and Miller put United back on terms.
The game ended 2-2 but there was worse news for Carlisle with winger Matty Robson limping out of the game after only nine minutes with a suspected back problem
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Carlisle are preparing for game that could see them safe from relegation. They welcome Plymouth Argyle to Brunton Park for a 3pm kick-off.
Dry and bright with some fairly warm sunshine on Saturday. Chilly start to the night. Cloudier start to Sunday.
Peter MacMahon takes a look at Labour's use of the Barnett Formula as a stick to hit the SNP.