I talked with @adam-vessey over in #islandora about this issue, and after some investigation, it looks like this is actually a bug in Djatoka. Specifically, it looks like Djatoka is not creating 100% JSON. If you check out [this](http://sourceforge.net/p/djatoka/code/HEAD/tree/src/gov/lanl/adore/djatoka/openurl/OpenURLJP2KMetadata.java#l120), it appears that Djatoka is appending strings to create JSON. @adam-vessey and I are in agreement that it is unsafe to wipe all backslashes, given that they can be valid in escape sequences, and if Djatoka were to address this issue, this PR would lead to issues. So, since this is actually a bug in Djatoka, due to bad JSON writing, it should be addressed there instead.