TDEV with 3200% total written tracks

I have two TDEV that suddenly alerted in Unisphere as 100% full.  Upon investigating I found they are showing more tracks written that we have allocated to the TDEV.  They are both over 3200% written (see below).  Each of the volumes actually has several hundred GB free.  How did this happen?  How can we fix it?  Is there a risk of continuing to use these TDEVs?  They are ESX datastores, should be migrate off of them?  Any feedback is appreciated.

C:\>symcfg list -tdev -dev 130B -detail

Symmetrix ID: XXXXXXXXXXXXX

Enabled Capacity (Tracks) : 9466672608

Bound   Capacity (Tracks) :   65536320

                     S Y M M E T R I X   T H I N   D E V I C E S

-------------------------------------------------------------------------------------

                                    Pool         Pool           Total      Compressed

       Bound      Flags      Total  Subs      Allocated        Written     Size/Ratio

Sym  Pool Name    ESPT      Tracks   (%)     Tracks (%)     Tracks (%)     Tracks (%)

---- ------------ ----- ---------- ----- ---------- --- ---------- --- ---------- ---

130B SATA_2TB_7K  F..B    65536320     1      54576   0 2142826472 3270      54576   0

     EFD_100GB    -.--           -     -       3336   0          -   -       3336   0

     FC_600GB_15K -.--           -     -     524352   1          -   -     524352   0

Total                   ---------- ----- ---------- --- ---------- --- ---------- ---

Tracks                    65536320     1     582264   0 2142826472  23     582264   0

Legend:

Flags:  (E)mulation : A = AS400, F = FBA, 8 = CKD3380, 9 = CKD3390

         (S)hared Tracks : S = Shared Tracks Present, . = No Shared Tracks

         (P)ersistent Allocs : A = All, S = Some, . = None

         S(T)atus    : B = Bound, I = Binding, U = Unbinding, A = Allocating,

                       D = Deallocating, R = Reclaiming, C = Compressing,

                       N = Uncompressing, . = Unbound,