Boor, then, and BROMOSEL minus boor leaves Elms.
I'm not sure why this one proved so hard. Obviously anagrams drive me batty at the best of times, but even so! I think it's because the anagram is made from two short words, so there's no real clusters of letters to spot. (If, for instance, the first word had been 'ruffian', the two fs and a u might have hinted at it.)
The flip side of this is: I'm amazed you spotted the combo to make it! So well done.
hS