I am afraid it's not doable with current template syntax. Album context simply doesn't offer that level of granularity.
I am sure it can be achieved with JavaScript or CSS hack. Let me think about this overnight, there are several possibilities and I am not sure which is better.
The idea is approximately this (writing from my head, never actually tested it
Code:
<script type="text/javascript">
var all_remastered=true;
<dax:track><dax:if(!trackremastered)>all_remastered=false;</dax:if></dax:track>
if(all_remastered){
document.write('<img src="...">');
}
</script>