Preamble: From six clues, before solving, a word must be removed, suggesting
a thematic circumstance. For all other clues, before solving, a letter must rise to the clue above, and a letter come in from the clue beneath (skipping the six clues referred to above), this effect wrapping around from the top of the across clues to the bottom of the down clues.
11a Man baiting me beamed on the way out (6) ?E?ME?
I think possibly an "i" has to come in from the clue below...and an "A" has to go to the clue above..possibly biting in the clue rather than baiting.
...if you look at the down entries there are 5 't's - they make new words when they're lifted up one or two positions (the remaining letters stay in the order they were first entered).