WS remains full after large aborted computations?

[Russtopia]

Hi, I saw this behaviour tonight:

      +/⍳1000000000
WS FULL+
      +/⍳1000000000
      ^ ^
     ⍳4
WS FULL+
      +/⍳1000000000
      ^ ^
      4
WS FULL+
      +/⍳1000000000
      ^ ^

.. seems the only way to recover is call )CLEAR but that erases the entire
active workspace. Is there a way to just clean out the incomplete operation
without losing )FNS and )VARS, and restore basic evaluation ?